#include "perl.h"
#include "XSUB.h"
-#define __PACKAGE__ "Scope::Upper"
+/* --- XS helpers ---------------------------------------------------------- */
-#ifndef SU_DEBUG
-# define SU_DEBUG 0
-#endif
-
-/* --- Compatibility ------------------------------------------------------- */
+#define XSH_PACKAGE "Scope::Upper"
-#ifndef NOOP
-# define NOOP
-#endif
+#include "xsh/caps.h"
+#include "xsh/util.h"
+#include "xsh/debug.h"
-#ifndef dNOOP
-# define dNOOP
-#endif
+/* --- Compatibility ------------------------------------------------------- */
#ifndef dVAR
# define dVAR dNOOP
# define PERL_UNUSED_VAR(V)
#endif
-#ifndef STMT_START
-# define STMT_START do
-#endif
-
-#ifndef STMT_END
-# define STMT_END while (0)
-#endif
-
-#if SU_DEBUG
-# define SU_D(X) STMT_START X STMT_END
-static void su_debug_log(const char *fmt, ...) {
- va_list va;
- SV *sv;
- dTHX;
- va_start(va, fmt);
- sv = get_sv(__PACKAGE__ "::DEBUG", 0);
- if (sv && SvTRUE(sv))
- PerlIO_vprintf(Perl_debug_log, fmt, va);
- va_end(va);
- return;
-}
-#else
-# define SU_D(X)
-#endif
-
#ifndef Newx
# define Newx(v, n, c) New(0, v, n, c)
#endif
# define NEGATIVE_INDICES_VAR "NEGATIVE_INDICES"
#endif
-#define SU_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
-#define SU_HAS_PERL_EXACT(R, V, S) ((PERL_REVISION == (R)) && (PERL_VERSION == (V)) && (PERL_SUBVERSION == (S)))
-
-/* --- Threads and multiplicity -------------------------------------------- */
-
-#ifndef SU_MULTIPLICITY
-# if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
-# define SU_MULTIPLICITY 1
-# else
-# define SU_MULTIPLICITY 0
-# endif
-#endif
-#if SU_MULTIPLICITY && !defined(tTHX)
-# define tTHX PerlInterpreter*
-#endif
-
-#if SU_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
-# define SU_THREADSAFE 1
-# ifndef MY_CXT_CLONE
-# define MY_CXT_CLONE \
- dMY_CXT_SV; \
- my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
- Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
- sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
-# endif
-#else
-# define SU_THREADSAFE 0
-# undef dMY_CXT
-# define dMY_CXT dNOOP
-# undef MY_CXT
-# define MY_CXT su_globaldata
-# undef START_MY_CXT
-# define START_MY_CXT static my_cxt_t MY_CXT;
-# undef MY_CXT_INIT
-# define MY_CXT_INIT NOOP
-# undef MY_CXT_CLONE
-# define MY_CXT_CLONE NOOP
-#endif
-
/* --- Error messages ------------------------------------------------------ */
static const char su_stack_smash[] = "Cannot target a scope outside of the current stack";
static perl_mutex su_uid_seq_counter_mutex;
-#define SU_LOCK(M) MUTEX_LOCK(M)
-#define SU_UNLOCK(M) MUTEX_UNLOCK(M)
-
-#else /* USE_ITHREADS */
-
-#define SU_LOCK(M)
-#define SU_UNLOCK(M)
-
-#endif /* !USE_ITHREADS */
+#endif /* USE_ITHREADS */
static UV su_uid_seq_next(pTHX_ UV depth) {
#define su_uid_seq_next(D) su_uid_seq_next(aTHX_ (D))
UV seq;
UV *seqs;
- SU_LOCK(&su_uid_seq_counter_mutex);
+ XSH_LOCK(&su_uid_seq_counter_mutex);
seqs = su_uid_seq_counter.seqs;
seq = ++seqs[depth];
- SU_UNLOCK(&su_uid_seq_counter_mutex);
+ XSH_UNLOCK(&su_uid_seq_counter_mutex);
return seq;
}
/* --- uplevel() data tokens and global storage ---------------------------- */
-#define SU_UPLEVEL_HIJACKS_RUNOPS SU_HAS_PERL(5, 8, 0)
+#define SU_UPLEVEL_HIJACKS_RUNOPS XSH_HAS_PERL(5, 8, 0)
typedef struct {
void *next;
/* --- Global data --------------------------------------------------------- */
-#define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
-
typedef struct {
char *stack_placeholder;
su_unwind_storage unwind_storage;
su_yield_storage yield_storage;
su_uplevel_storage uplevel_storage;
su_uid_storage uid_storage;
-} my_cxt_t;
+} xsh_user_cxt_t;
+
+#define XSH_THREADS_USER_CONTEXT 1
+#define XSH_THREADS_USER_CLONE_NEEDS_DUP 0
+#define XSH_THREADS_COMPILE_TIME_PROTECTION 0
+
+#if XSH_THREADSAFE
+
+static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt) {
+ new_cxt->uplevel_storage.top = NULL;
+ new_cxt->uplevel_storage.root = NULL;
+ new_cxt->uplevel_storage.count = 0;
-START_MY_CXT
+ new_cxt->uid_storage.map = NULL;
+ new_cxt->uid_storage.used = 0;
+ new_cxt->uid_storage.alloc = 0;
+
+ su_uid_storage_dup(&new_cxt->uid_storage, &old_cxt->uid_storage,
+ old_cxt->uid_storage.used);
+
+ return;
+}
+
+#endif /* XSH_THREADSAFE */
+
+#include "xsh/threads.h"
/* --- Stack manipulations ------------------------------------------------- */
-#define SU_SAVE_PLACEHOLDER() save_pptr(&MY_CXT.stack_placeholder)
+#define SU_SAVE_PLACEHOLDER() save_pptr(&XSH_CXT.stack_placeholder)
#define SU_SAVE_DESTRUCTOR_SIZE 3
#define SU_SAVE_PLACEHOLDER_SIZE 3
#define SU_SAVE_GVCV_SIZE SU_SAVE_DESTRUCTOR_SIZE
-#if !SU_HAS_PERL(5, 8, 9)
+#if !XSH_HAS_PERL(5, 8, 9)
# define SU_SAVE_GP_SIZE 6
-#elif !SU_HAS_PERL(5, 13, 0) || (SU_RELEASE && SU_HAS_PERL_EXACT(5, 13, 0))
+#elif !XSH_HAS_PERL(5, 13, 0) || (SU_RELEASE && XSH_HAS_PERL_EXACT(5, 13, 0))
# define SU_SAVE_GP_SIZE 3
-#elif !SU_HAS_PERL(5, 13, 8)
+#elif !XSH_HAS_PERL(5, 13, 8)
# define SU_SAVE_GP_SIZE 4
#else
# define SU_SAVE_GP_SIZE 3
return key;
/* Added by MJD in perl-5.8.1 with 6f12eb6d2a1dfaf441504d869b27d2e40ef4966a */
-#if SU_HAS_PERL(5, 8, 1)
+#if XSH_HAS_PERL(5, 8, 1)
if (SvRMAGICAL(av)) {
const MAGIC * const tied_magic = mg_find((SV *) av, PERL_MAGIC_tied);
if (tied_magic) {
/* ... Saving code slots from a glob ....................................... */
-#if !SU_HAS_PERL(5, 10, 0) && !defined(mro_method_changed_in)
+#if !XSH_HAS_PERL(5, 10, 0) && !defined(mro_method_changed_in)
# define mro_method_changed_in(G) PL_sub_generation++
#endif
/* ... Reap ................................................................ */
-#define SU_SAVE_LAST_CX (!SU_HAS_PERL(5, 8, 4) || (SU_HAS_PERL(5, 9, 5) && !SU_HAS_PERL(5, 14, 0)) || SU_HAS_PERL(5, 15, 0))
+#define SU_SAVE_LAST_CX (!XSH_HAS_PERL(5, 8, 4) || (XSH_HAS_PERL(5, 9, 5) && !XSH_HAS_PERL(5, 14, 0)) || XSH_HAS_PERL(5, 15, 0))
typedef struct {
su_ud_common ci;
dSP;
- SU_D(su_debug_log("@@@ call scope_ix=%2d save_ix=%2d\n",
- PL_scopestack_ix, PL_savestack_ix));
+ XSH_D(su_debug_log("@@@ call scope_ix=%2d save_ix=%2d\n",
+ PL_scopestack_ix, PL_savestack_ix));
ENTER;
SAVETMPS;
#endif
}
- SU_D({
+ XSH_D({
SV *z = newSV(0);
SvUPGRADE(z, t);
su_debug_log("%p: === localize a %s\n",ud, sv_reftype(z, 0));
/* ... Unique context ID ................................................... */
-/* We must pass the index because MY_CXT.uid_storage might be reallocated
+/* We must pass the index because XSH_CXT.uid_storage might be reallocated
* between the UID fetch and the invalidation at the end of scope. */
typedef struct {
static void su_uid_drop(pTHX_ void *ud_) {
su_ud_uid *ud = ud_;
- dMY_CXT;
+ dXSH_CXT;
- MY_CXT.uid_storage.map[ud->idx].flags &= ~SU_UID_ACTIVE;
+ XSH_CXT.uid_storage.map[ud->idx].flags &= ~SU_UID_ACTIVE;
SU_UD_FREE(ud);
#ifdef DEBUGGING
# define SU_CXNAME(C) PL_block_type[CxTYPE(C)]
#else
-# if SU_HAS_PERL(5, 11, 0)
+# if XSH_HAS_PERL(5, 11, 0)
static const char *su_block_type[] = {
"NULL",
"WHEN",
"EVAL",
"SUBST"
};
-# elif SU_HAS_PERL(5, 9, 3)
+# elif XSH_HAS_PERL(5, 9, 3)
static const char *su_block_type[] = {
"NULL",
"SUB",
I32 depth, base, mark, *origin;
depth = SU_UD_DEPTH(ud);
- SU_D(su_debug_log(
+ XSH_D(su_debug_log(
"%p: --- pop a %s\n"
"%p: leave scope at depth=%2d scope_ix=%2d cur_top=%2d cur_base=%2d\n",
ud, SU_CXNAME(cxstack + cxstack_ix),
mark = origin[depth];
base = origin[depth - 1];
- SU_D(su_debug_log("%p: original scope was %*c top=%2d base=%2d\n",
- ud, 24, ' ', mark, base));
+ XSH_D(su_debug_log("%p: original scope was %*c top=%2d base=%2d\n",
+ ud, 24, ' ', mark, base));
if (base < mark) {
-#if SU_HAS_PERL(5, 19, 4)
+#if XSH_HAS_PERL(5, 19, 4)
I32 save = -1;
PERL_CONTEXT *cx;
#endif
- SU_D(su_debug_log("%p: clear leftovers\n", ud));
+ XSH_D(su_debug_log("%p: clear leftovers\n", ud));
-#if SU_HAS_PERL(5, 19, 4)
+#if XSH_HAS_PERL(5, 19, 4)
cx = cxstack + cxstack_ix;
if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
save = PL_scopestack[cx->blk_oldscopesp - 1];
PL_savestack_ix = mark;
leave_scope(base);
-#if SU_HAS_PERL(5, 19, 4)
+#if XSH_HAS_PERL(5, 19, 4)
if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT)
PL_scopestack[cx->blk_oldscopesp - 1] = save;
#endif
U8 pad;
if ((pad = SU_UD_PAD(ud)) > 0) {
- dMY_CXT;
+ dXSH_CXT;
do {
- SU_D(su_debug_log(
+ XSH_D(su_debug_log(
"%p: push a pad slot at depth=%2d scope_ix=%2d save_ix=%2d\n",
ud, depth, PL_scopestack_ix, PL_savestack_ix));
SU_SAVE_PLACEHOLDER();
} while (--pad);
}
- SU_D(su_debug_log(
- "%p: push destructor at depth=%2d scope_ix=%2d save_ix=%2d\n",
- ud, depth, PL_scopestack_ix, PL_savestack_ix));
+ XSH_D(su_debug_log(
+ "%p: push destructor at depth=%2d scope_ix=%2d save_ix=%2d\n",
+ ud, depth, PL_scopestack_ix, PL_savestack_ix));
SAVEDESTRUCTOR_X(su_pop, ud);
} else {
switch (SU_UD_TYPE(ud)) {
case SU_UD_TYPE_REAP: {
- SU_D(su_debug_log("%p: === reap\n%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
+ XSH_D(su_debug_log("%p: === reap\n%p: depth=%2d scope_ix=%2d save_ix=%2d\n",
ud, ud, SU_UD_DEPTH(ud), PL_scopestack_ix, PL_savestack_ix));
SAVEDESTRUCTOR_X(su_call, SU_UD_REAP_CB(ud));
SU_UD_FREE(ud);
}
}
- SU_D(su_debug_log("%p: --- end pop: cur_top=%2d == cur_base=%2d\n",
- ud, PL_savestack_ix, PL_scopestack[PL_scopestack_ix]));
+ XSH_D(su_debug_log("%p: --- end pop: cur_top=%2d == cur_base=%2d\n",
+ ud, PL_savestack_ix, PL_scopestack[PL_scopestack_ix]));
}
/* --- Initialize the stack and the action userdata ------------------------ */
I32 i, depth, offset, base, *origin;
U8 pad;
- SU_D(su_debug_log("%p: ### init for cx %d\n", ud, cxix));
+ XSH_D(su_debug_log("%p: ### init for cx %d\n", ud, cxix));
/* su_pop() is going to be called from leave_scope(), so before pushing the
* next callback, we'll want to flush the current scope stack slice first.
++pad;
}
offset = SU_SAVE_DESTRUCTOR_SIZE + SU_SAVE_PLACEHOLDER_SIZE * pad;
- SU_D(su_debug_log("%p: size=%d pad=%d offset=%d\n", ud, size, pad, offset));
+ XSH_D(su_debug_log("%p: size=%d pad=%d offset=%d\n", ud, size, pad, offset));
depth = PL_scopestack_ix - cxstack[cxix].blk_oldscopesp;
- SU_D(su_debug_log("%p: going down to depth %d\n", ud, depth));
+ XSH_D(su_debug_log("%p: going down to depth %d\n", ud, depth));
/* We need to bump all the intermediary stack markers just in case an
* exception is thrown before the target scope is reached. Indeed, in this
* stack. */
if (PL_savestack_ix + SU_SAVE_DESTRUCTOR_SIZE
<= PL_scopestack[PL_scopestack_ix - 1]) {
- dMY_CXT;
+ dXSH_CXT;
do {
- SU_D(su_debug_log("%p: push a fake slot at scope_ix=%2d save_ix=%2d\n",
- ud, PL_scopestack_ix, PL_savestack_ix));
+ XSH_D(su_debug_log("%p: push a fake slot at scope_ix=%2d save_ix=%2d\n",
+ ud, PL_scopestack_ix, PL_savestack_ix));
SU_SAVE_PLACEHOLDER();
} while (PL_savestack_ix + SU_SAVE_DESTRUCTOR_SIZE
<= PL_scopestack[PL_scopestack_ix - 1]);
}
- SU_D(su_debug_log("%p: push first destructor at scope_ix=%2d save_ix=%2d\n",
- ud, PL_scopestack_ix, PL_savestack_ix));
+ XSH_D(su_debug_log("%p: push first destructor at scope_ix=%2d save_ix=%2d\n",
+ ud, PL_scopestack_ix, PL_savestack_ix));
SAVEDESTRUCTOR_X(su_pop, ud);
- SU_D({
+ XSH_D({
for (i = 0; i <= depth; ++i) {
I32 j = PL_scopestack_ix - i;
su_debug_log("%p: depth=%2d scope_ix=%2d saved_floor=%2d new_floor=%2d\n",
/* --- Unwind stack -------------------------------------------------------- */
static void su_unwind(pTHX_ void *ud_) {
- dMY_CXT;
- I32 cxix = MY_CXT.unwind_storage.cxix;
- I32 items = MY_CXT.unwind_storage.items;
+ dXSH_CXT;
+ I32 cxix = XSH_CXT.unwind_storage.cxix;
+ I32 items = XSH_CXT.unwind_storage.items;
I32 mark;
PERL_UNUSED_VAR(ud_);
- PL_stack_sp = MY_CXT.unwind_storage.savesp;
-#if SU_HAS_PERL(5, 19, 4)
+ PL_stack_sp = XSH_CXT.unwind_storage.savesp;
+#if XSH_HAS_PERL(5, 19, 4)
{
I32 i;
SV **sp = PL_stack_sp;
mark = PL_markstack[cxstack[cxix].blk_oldmarksp];
*PL_markstack_ptr = PL_stack_sp - PL_stack_base - items;
- SU_D({
+ XSH_D({
I32 gimme = GIMME_V;
su_debug_log("%p: cx=%d gimme=%s items=%d sp=%d oldmark=%d mark=%d\n",
- &MY_CXT, cxix,
+ &XSH_CXT, cxix,
gimme == G_VOID ? "void" : gimme == G_ARRAY ? "list" : "scalar",
items, PL_stack_sp - PL_stack_base, *PL_markstack_ptr, mark);
});
- PL_op = (OP *) &(MY_CXT.unwind_storage.return_op);
+ PL_op = (OP *) &(XSH_CXT.unwind_storage.return_op);
PL_op = PL_op->op_ppaddr(aTHX);
*PL_markstack_ptr = mark;
- MY_CXT.unwind_storage.proxy_op.op_next = PL_op;
- PL_op = &(MY_CXT.unwind_storage.proxy_op);
+ XSH_CXT.unwind_storage.proxy_op.op_next = PL_op;
+ PL_op = &(XSH_CXT.unwind_storage.proxy_op);
}
/* --- Yield --------------------------------------------------------------- */
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
# define SU_RETOP_SUB(C) ((C)->blk_sub.retop)
# define SU_RETOP_EVAL(C) ((C)->blk_eval.retop)
# define SU_RETOP_LOOP(C) ((C)->blk_loop.my_op->op_lastop->op_next)
#endif
static void su_yield(pTHX_ void *ud_) {
- dMY_CXT;
+ dXSH_CXT;
PERL_CONTEXT *cx;
const char *which = ud_;
- I32 cxix = MY_CXT.yield_storage.cxix;
- I32 items = MY_CXT.yield_storage.items;
+ I32 cxix = XSH_CXT.yield_storage.cxix;
+ I32 items = XSH_CXT.yield_storage.items;
opcode type = OP_NULL;
U8 flags = 0;
OP *next;
OP *o = NULL;
/* Is this actually a given/when block? This may occur only when yield was
* called with HERE (or nothing) as the context. */
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
if (cxix > 0) {
PERL_CONTEXT *prev = cx - 1;
U8 prev_type = CxTYPE(prev);
case CXt_EVAL:
o = SU_RETOP_EVAL(cx2);
break;
-#if SU_HAS_PERL(5, 11, 0)
+#if XSH_HAS_PERL(5, 11, 0)
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
case CXt_LOOP_LAZYSV:
type = CxTRYBLOCK(cx) ? OP_LEAVETRY : OP_LEAVEEVAL;
next = SU_RETOP_EVAL(cx);
break;
-#if SU_HAS_PERL(5, 11, 0)
+#if XSH_HAS_PERL(5, 11, 0)
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
case CXt_LOOP_LAZYSV:
type = OP_LEAVELOOP;
next = SU_RETOP_LOOP(cx);
break;
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
case CXt_GIVEN:
cxt_given:
type = OP_LEAVEGIVEN;
break;
case CXt_WHEN:
cxt_when:
-#if SU_HAS_PERL(5, 15, 1)
+#if XSH_HAS_PERL(5, 15, 1)
type = OP_LEAVEWHEN;
#else
type = OP_BREAK;
break;
}
- PL_stack_sp = MY_CXT.yield_storage.savesp;
-#if SU_HAS_PERL(5, 19, 4)
+ PL_stack_sp = XSH_CXT.yield_storage.savesp;
+#if XSH_HAS_PERL(5, 19, 4)
{
I32 i;
SV **sp = PL_stack_sp;
flags |= OP_GIMME_REVERSE(cx->blk_gimme);
- MY_CXT.yield_storage.leave_op.op_type = type;
- MY_CXT.yield_storage.leave_op.op_ppaddr = PL_ppaddr[type];
- MY_CXT.yield_storage.leave_op.op_flags = flags;
- MY_CXT.yield_storage.leave_op.op_next = next;
+ XSH_CXT.yield_storage.leave_op.op_type = type;
+ XSH_CXT.yield_storage.leave_op.op_ppaddr = PL_ppaddr[type];
+ XSH_CXT.yield_storage.leave_op.op_flags = flags;
+ XSH_CXT.yield_storage.leave_op.op_next = next;
- PL_op = (OP *) &(MY_CXT.yield_storage.leave_op);
+ PL_op = (OP *) &(XSH_CXT.yield_storage.leave_op);
PL_op = PL_op->op_ppaddr(aTHX);
- MY_CXT.yield_storage.proxy_op.op_next = PL_op;
- PL_op = &(MY_CXT.yield_storage.proxy_op);
+ XSH_CXT.yield_storage.proxy_op.op_next = PL_op;
+ PL_op = &(XSH_CXT.yield_storage.proxy_op);
}
/* --- Uplevel ------------------------------------------------------------- */
#define su_uplevel_storage_new(I) su_uplevel_storage_new(aTHX_ (I))
su_uplevel_ud *sud;
UV depth;
- dMY_CXT;
+ dXSH_CXT;
- sud = MY_CXT.uplevel_storage.root;
+ sud = XSH_CXT.uplevel_storage.root;
if (sud) {
- MY_CXT.uplevel_storage.root = sud->next;
- MY_CXT.uplevel_storage.count--;
+ XSH_CXT.uplevel_storage.root = sud->next;
+ XSH_CXT.uplevel_storage.count--;
} else {
sud = su_uplevel_ud_new();
}
- sud->next = MY_CXT.uplevel_storage.top;
- MY_CXT.uplevel_storage.top = sud;
+ sud->next = XSH_CXT.uplevel_storage.top;
+ XSH_CXT.uplevel_storage.top = sud;
depth = su_uid_depth(cxix);
- su_uid_storage_dup(&sud->tmp_uid_storage, &MY_CXT.uid_storage, depth);
- sud->old_uid_storage = MY_CXT.uid_storage;
- MY_CXT.uid_storage = sud->tmp_uid_storage;
+ su_uid_storage_dup(&sud->tmp_uid_storage, &XSH_CXT.uid_storage, depth);
+ sud->old_uid_storage = XSH_CXT.uid_storage;
+ XSH_CXT.uid_storage = sud->tmp_uid_storage;
return sud;
}
-#if SU_HAS_PERL(5, 13, 7)
+#if XSH_HAS_PERL(5, 13, 7)
static void su_uplevel_storage_delete(pTHX_ su_uplevel_ud *sud) {
#define su_uplevel_storage_delete(S) su_uplevel_storage_delete(aTHX_ (S))
- dMY_CXT;
+ dXSH_CXT;
- sud->tmp_uid_storage = MY_CXT.uid_storage;
- MY_CXT.uid_storage = sud->old_uid_storage;
+ sud->tmp_uid_storage = XSH_CXT.uid_storage;
+ XSH_CXT.uid_storage = sud->old_uid_storage;
{
su_uid *map;
STRLEN i, alloc;
for (i = 0; i < alloc; ++i)
map[i].flags &= ~SU_UID_ACTIVE;
}
- MY_CXT.uplevel_storage.top = sud->next;
+ XSH_CXT.uplevel_storage.top = sud->next;
- if (MY_CXT.uplevel_storage.count >= SU_UPLEVEL_STORAGE_SIZE) {
+ if (XSH_CXT.uplevel_storage.count >= SU_UPLEVEL_STORAGE_SIZE) {
su_uplevel_ud_delete(sud);
} else {
- sud->next = MY_CXT.uplevel_storage.root;
- MY_CXT.uplevel_storage.root = sud;
- MY_CXT.uplevel_storage.count++;
+ sud->next = XSH_CXT.uplevel_storage.root;
+ XSH_CXT.uplevel_storage.root = sud;
+ XSH_CXT.uplevel_storage.count++;
}
}
done:
if (argarray) {
- dMY_CXT;
+ dXSH_CXT;
- if (MY_CXT.uplevel_storage.top->cxix == cxix) {
+ if (XSH_CXT.uplevel_storage.top->cxix == cxix) {
AV *args = GvAV(PL_defgv);
I32 items = AvFILLp(args);
PL_op = op = op->op_ppaddr(aTHX);
-#if !SU_HAS_PERL(5, 13, 0)
+#if !XSH_HAS_PERL(5, 13, 0)
PERL_ASYNC_CHECK();
#endif
} while (op);
CvDEPTH(target) = sud->target_depth - levels;
PL_curstackinfo->si_cxix = i - 1;
-#if !SU_HAS_PERL(5, 13, 1)
+#if !XSH_HAS_PERL(5, 13, 1)
/* Since $@ was maybe localized between the target frame and the uplevel
* call, we forcefully flush the save stack to get rid of it and then
* reset $@ to its proper value. Note that the the call to
* pointer to the current context frame across this call. This means that we
* can't free the temporary context stack we used for the uplevel call right
* now, or that pointer upwards would point to garbage. */
-#if SU_HAS_PERL(5, 13, 7)
+#if XSH_HAS_PERL(5, 13, 7)
/* This issue has been fixed in perl with commit 8f89e5a9, which was made
* public in perl 5.13.7. */
su_uplevel_storage_delete(sud);
#else
/* Otherwise, we just enqueue it back in the global storage list. */
{
- dMY_CXT;
+ dXSH_CXT;
- sud->tmp_uid_storage = MY_CXT.uid_storage;
- MY_CXT.uid_storage = sud->old_uid_storage;
+ sud->tmp_uid_storage = XSH_CXT.uid_storage;
+ XSH_CXT.uid_storage = sud->old_uid_storage;
- MY_CXT.uplevel_storage.top = sud->next;
- sud->next = MY_CXT.uplevel_storage.root;
- MY_CXT.uplevel_storage.root = sud;
- MY_CXT.uplevel_storage.count++;
+ XSH_CXT.uplevel_storage.top = sud->next;
+ sud->next = XSH_CXT.uplevel_storage.root;
+ XSH_CXT.uplevel_storage.root = sud;
+ XSH_CXT.uplevel_storage.count++;
}
#endif
#endif
CvGV_set(cv, gv);
-#if SU_RELEASE && SU_HAS_PERL_EXACT(5, 21, 4)
+#if SU_RELEASE && XSH_HAS_PERL_EXACT(5, 21, 4)
CvNAMED_off(cv);
#endif
CvSTASH_set(cv, CvSTASH(proto));
/* Commit 4c74a7df, publicized with perl 5.13.3, began to add backrefs to
* stashes. CvSTASH_set() started to do it as well with commit c68d95645
* (which was part of perl 5.13.7). */
-#if SU_HAS_PERL(5, 13, 3) && !SU_HAS_PERL(5, 13, 7)
+#if XSH_HAS_PERL(5, 13, 3) && !XSH_HAS_PERL(5, 13, 7)
if (CvSTASH(proto))
Perl_sv_add_backref(aTHX_ CvSTASH(proto), MUTABLE_SV(cv));
#endif
#define su_uid_storage_fetch(D) su_uid_storage_fetch(aTHX_ (D))
su_uid *map;
STRLEN alloc;
- dMY_CXT;
+ dXSH_CXT;
- map = MY_CXT.uid_storage.map;
- alloc = MY_CXT.uid_storage.alloc;
+ map = XSH_CXT.uid_storage.map;
+ alloc = XSH_CXT.uid_storage.alloc;
if (depth >= alloc) {
STRLEN i;
map[i].flags = 0;
}
- MY_CXT.uid_storage.map = map;
- MY_CXT.uid_storage.alloc = depth + 1;
+ XSH_CXT.uid_storage.map = map;
+ XSH_CXT.uid_storage.alloc = depth + 1;
}
- if (depth >= MY_CXT.uid_storage.used)
- MY_CXT.uid_storage.used = depth + 1;
+ if (depth >= XSH_CXT.uid_storage.used)
+ XSH_CXT.uid_storage.used = depth + 1;
return map + depth;
}
static int su_uid_storage_check(pTHX_ UV depth, UV seq) {
#define su_uid_storage_check(D, S) su_uid_storage_check(aTHX_ (D), (S))
su_uid *uid;
- dMY_CXT;
+ dXSH_CXT;
- if (depth >= MY_CXT.uid_storage.used)
+ if (depth >= XSH_CXT.uid_storage.used)
return 0;
- uid = MY_CXT.uid_storage.map + depth;
+ uid = XSH_CXT.uid_storage.map + depth;
return (uid->seq == seq) && (uid->flags & SU_UID_ACTIVE);
}
PERL_CONTEXT *cx = cxstack + i;
switch (CxTYPE(cx)) {
-#if SU_HAS_PERL(5, 17, 1)
+#if XSH_HAS_PERL(5, 17, 1)
case CXt_LOOP_PLAIN:
#endif
case CXt_BLOCK:
PERL_CONTEXT *prev = cx - 1;
switch (CxTYPE(prev)) {
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
case CXt_GIVEN:
case CXt_WHEN:
#endif
-#if SU_HAS_PERL(5, 11, 0)
+#if XSH_HAS_PERL(5, 11, 0)
/* That's the only subcategory that can cause an extra BLOCK context */
case CXt_LOOP_PLAIN:
#else
PERL_CONTEXT *cx = next - 1;
switch (CxTYPE(cx)) {
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
case CXt_GIVEN:
case CXt_WHEN:
#endif
-#if SU_HAS_PERL(5, 11, 0)
+#if XSH_HAS_PERL(5, 11, 0)
/* That's the only subcategory that can cause an extra BLOCK context */
case CXt_LOOP_PLAIN:
#else
switch (CxTYPE(cx)) {
/* gimme is always G_ARRAY for loop contexts. */
-#if SU_HAS_PERL(5, 11, 0)
+#if XSH_HAS_PERL(5, 11, 0)
case CXt_LOOP_FOR:
case CXt_LOOP_PLAIN:
case CXt_LOOP_LAZYSV:
return G_VOID;
}
-/* --- Global setup/teardown ----------------------------------------------- */
+/* --- Module setup/teardown ----------------------------------------------- */
-static VOL U32 su_initialized = 0;
-
-static void su_global_teardown(pTHX_ void *root) {
- if (!su_initialized)
- return;
+static void xsh_user_global_setup(pTHX) {
+ HV *stash;
-#if SU_MULTIPLICITY
- if (aTHX != root)
- return;
-#endif
+ MUTEX_INIT(&su_uid_seq_counter_mutex);
- SU_LOCK(&su_uid_seq_counter_mutex);
- PerlMemShared_free(su_uid_seq_counter.seqs);
+ XSH_LOCK(&su_uid_seq_counter_mutex);
+ su_uid_seq_counter.seqs = NULL;
su_uid_seq_counter.size = 0;
- SU_UNLOCK(&su_uid_seq_counter_mutex);
+ XSH_UNLOCK(&su_uid_seq_counter_mutex);
- MUTEX_DESTROY(&su_uid_seq_counter_mutex);
-
- su_initialized = 0;
+ stash = gv_stashpv(XSH_PACKAGE, 1);
+ newCONSTSUB(stash, "TOP", newSViv(0));
+ newCONSTSUB(stash, "SU_THREADSAFE", newSVuv(XSH_THREADSAFE));
return;
}
-XS(XS_Scope__Upper_unwind);
-XS(XS_Scope__Upper_yield);
-XS(XS_Scope__Upper_leave);
-
-#if SU_HAS_PERL(5, 9, 0)
-# define SU_XS_FILE_TYPE const char
-#else
-# define SU_XS_FILE_TYPE char
-#endif
-
-static void su_global_setup(pTHX_ SU_XS_FILE_TYPE *file) {
-#define su_global_setup(F) su_global_setup(aTHX_ (F))
- HV *stash;
+static void xsh_user_local_setup(pTHX_ xsh_user_cxt_t *cxt) {
+ cxt->stack_placeholder = NULL;
- if (su_initialized)
- return;
+ /* NewOp() calls calloc() which just zeroes the memory with memset(). */
+ Zero(&(cxt->unwind_storage.return_op), 1, LISTOP);
+ cxt->unwind_storage.return_op.op_type = OP_RETURN;
+ cxt->unwind_storage.return_op.op_ppaddr = PL_ppaddr[OP_RETURN];
- MUTEX_INIT(&su_uid_seq_counter_mutex);
+ Zero(&(cxt->unwind_storage.proxy_op), 1, OP);
+ cxt->unwind_storage.proxy_op.op_type = OP_STUB;
+ cxt->unwind_storage.proxy_op.op_ppaddr = NULL;
- SU_LOCK(&su_uid_seq_counter_mutex);
- su_uid_seq_counter.seqs = NULL;
- su_uid_seq_counter.size = 0;
- SU_UNLOCK(&su_uid_seq_counter_mutex);
+ Zero(&(cxt->yield_storage.leave_op), 1, UNOP);
+ cxt->yield_storage.leave_op.op_type = OP_STUB;
+ cxt->yield_storage.leave_op.op_ppaddr = NULL;
- stash = gv_stashpv(__PACKAGE__, 1);
- newCONSTSUB(stash, "TOP", newSViv(0));
- newCONSTSUB(stash, "SU_THREADSAFE", newSVuv(SU_THREADSAFE));
+ Zero(&(cxt->yield_storage.proxy_op), 1, OP);
+ cxt->yield_storage.proxy_op.op_type = OP_STUB;
+ cxt->yield_storage.proxy_op.op_ppaddr = NULL;
- newXSproto("Scope::Upper::unwind", XS_Scope__Upper_unwind, file, NULL);
- newXSproto("Scope::Upper::yield", XS_Scope__Upper_yield, file, NULL);
- newXSproto("Scope::Upper::leave", XS_Scope__Upper_leave, file, NULL);
+ cxt->uplevel_storage.top = NULL;
+ cxt->uplevel_storage.root = NULL;
+ cxt->uplevel_storage.count = 0;
-#if SU_MULTIPLICITY
- call_atexit(su_global_teardown, aTHX);
-#else
- call_atexit(su_global_teardown, NULL);
-#endif
-
- su_initialized = 1;
+ cxt->uid_storage.map = NULL;
+ cxt->uid_storage.used = 0;
+ cxt->uid_storage.alloc = 0;
return;
}
-/* --- Interpreter setup/teardown ------------------------------------------ */
-
-static void su_local_teardown(pTHX_ void *param) {
+static void xsh_user_local_teardown(pTHX_ xsh_user_cxt_t *cxt) {
su_uplevel_ud *cur;
- dMY_CXT;
- Safefree(MY_CXT.uid_storage.map);
+ Safefree(cxt->uid_storage.map);
- cur = MY_CXT.uplevel_storage.root;
+ cur = cxt->uplevel_storage.root;
if (cur) {
su_uplevel_ud *prev;
do {
return;
}
-static void su_local_setup(pTHX) {
-#define su_local_setup() su_local_setup(aTHX)
- MY_CXT_INIT;
-
- MY_CXT.stack_placeholder = NULL;
-
- /* NewOp() calls calloc() which just zeroes the memory with memset(). */
- Zero(&(MY_CXT.unwind_storage.return_op), 1, LISTOP);
- MY_CXT.unwind_storage.return_op.op_type = OP_RETURN;
- MY_CXT.unwind_storage.return_op.op_ppaddr = PL_ppaddr[OP_RETURN];
-
- Zero(&(MY_CXT.unwind_storage.proxy_op), 1, OP);
- MY_CXT.unwind_storage.proxy_op.op_type = OP_STUB;
- MY_CXT.unwind_storage.proxy_op.op_ppaddr = NULL;
-
- Zero(&(MY_CXT.yield_storage.leave_op), 1, UNOP);
- MY_CXT.yield_storage.leave_op.op_type = OP_STUB;
- MY_CXT.yield_storage.leave_op.op_ppaddr = NULL;
-
- Zero(&(MY_CXT.yield_storage.proxy_op), 1, OP);
- MY_CXT.yield_storage.proxy_op.op_type = OP_STUB;
- MY_CXT.yield_storage.proxy_op.op_ppaddr = NULL;
-
- MY_CXT.uplevel_storage.top = NULL;
- MY_CXT.uplevel_storage.root = NULL;
- MY_CXT.uplevel_storage.count = 0;
-
- MY_CXT.uid_storage.map = NULL;
- MY_CXT.uid_storage.used = 0;
- MY_CXT.uid_storage.alloc = 0;
+static void xsh_user_global_teardown(pTHX) {
+ XSH_LOCK(&su_uid_seq_counter_mutex);
+ PerlMemShared_free(su_uid_seq_counter.seqs);
+ su_uid_seq_counter.size = 0;
+ XSH_UNLOCK(&su_uid_seq_counter_mutex);
- call_atexit(su_local_teardown, NULL);
+ MUTEX_DESTROY(&su_uid_seq_counter_mutex);
return;
}
} \
} STMT_END
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
# define SU_INFO_COUNT 11
#else
# define SU_INFO_COUNT 10
#else
dXSARGS;
#endif
- dMY_CXT;
+ dXSH_CXT;
I32 cxix;
PERL_UNUSED_VAR(cv); /* -W */
continue;
case CXt_EVAL:
case CXt_FORMAT:
- MY_CXT.unwind_storage.cxix = cxix;
- MY_CXT.unwind_storage.items = items;
- MY_CXT.unwind_storage.savesp = PL_stack_sp;
+ XSH_CXT.unwind_storage.cxix = cxix;
+ XSH_CXT.unwind_storage.items = items;
+ XSH_CXT.unwind_storage.savesp = PL_stack_sp;
if (items > 0) {
- MY_CXT.unwind_storage.items--;
- MY_CXT.unwind_storage.savesp--;
+ XSH_CXT.unwind_storage.items--;
+ XSH_CXT.unwind_storage.savesp--;
}
/* pp_entersub will want to sanitize the stack after returning from there
* Screw that, we're insane!
#else
dXSARGS;
#endif
- dMY_CXT;
+ dXSH_CXT;
I32 cxix;
PERL_UNUSED_VAR(cv); /* -W */
PERL_UNUSED_VAR(ax); /* -Wall */
SU_GET_CONTEXT(0, items - 1, su_context_here());
- MY_CXT.yield_storage.cxix = cxix;
- MY_CXT.yield_storage.items = items;
- MY_CXT.yield_storage.savesp = PL_stack_sp;
+ XSH_CXT.yield_storage.cxix = cxix;
+ XSH_CXT.yield_storage.items = items;
+ XSH_CXT.yield_storage.savesp = PL_stack_sp;
if (items > 0) {
- MY_CXT.yield_storage.items--;
- MY_CXT.yield_storage.savesp--;
+ XSH_CXT.yield_storage.items--;
+ XSH_CXT.yield_storage.savesp--;
}
/* See XS_Scope__Upper_unwind */
if (GIMME_V == G_SCALAR)
#else
dXSARGS;
#endif
- dMY_CXT;
+ dXSH_CXT;
PERL_UNUSED_VAR(cv); /* -W */
PERL_UNUSED_VAR(ax); /* -Wall */
- MY_CXT.yield_storage.cxix = su_context_here();
- MY_CXT.yield_storage.items = items;
- MY_CXT.yield_storage.savesp = PL_stack_sp;
+ XSH_CXT.yield_storage.cxix = su_context_here();
+ XSH_CXT.yield_storage.items = items;
+ XSH_CXT.yield_storage.savesp = PL_stack_sp;
/* See XS_Scope__Upper_unwind */
if (GIMME_V == G_SCALAR)
PL_stack_sp = PL_stack_base + PL_markstack_ptr[1] + 1;
BOOT:
{
- su_global_setup(file);
- su_local_setup();
+ xsh_setup();
+ newXSproto("Scope::Upper::unwind", XS_Scope__Upper_unwind, file, NULL);
+ newXSproto("Scope::Upper::yield", XS_Scope__Upper_yield, file, NULL);
+ newXSproto("Scope::Upper::leave", XS_Scope__Upper_leave, file, NULL);
}
-#if SU_THREADSAFE
+#if XSH_THREADSAFE
void
CLONE(...)
PROTOTYPE: DISABLE
-PREINIT:
- su_uid_storage new_cxt;
PPCODE:
- {
- dMY_CXT;
- new_cxt.map = NULL;
- new_cxt.used = 0;
- new_cxt.alloc = 0;
- su_uid_storage_dup(&new_cxt, &MY_CXT.uid_storage, MY_CXT.uid_storage.used);
- }
- {
- MY_CXT_CLONE;
- MY_CXT.uplevel_storage.top = NULL;
- MY_CXT.uplevel_storage.root = NULL;
- MY_CXT.uplevel_storage.count = 0;
- MY_CXT.uid_storage = new_cxt;
- }
+ xsh_clone();
XSRETURN(0);
-#endif /* SU_THREADSAFE */
+#endif /* XSH_THREADSAFE */
void
HERE()
case CXt_EVAL:
if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) {
/* eval STRING */
-#if SU_HAS_PERL(5, 17, 4)
+#if XSH_HAS_PERL(5, 17, 4)
PUSHs(newSVpvn_flags(SvPVX(cx->blk_eval.cur_text),
SvCUR(cx->blk_eval.cur_text)-2,
SvUTF8(cx->blk_eval.cur_text)|SVs_TEMP));
/* warnings (9) */
{
SV *mask = NULL;
-#if SU_HAS_PERL(5, 9, 4)
+#if XSH_HAS_PERL(5, 9, 4)
STRLEN *old_warnings = cop->cop_warnings;
#else
SV *old_warnings = cop->cop_warnings;
if (PL_dowarn & G_WARN_ON)
goto context_info_warnings_on;
else
-#if SU_HAS_PERL(5, 17, 4)
+#if XSH_HAS_PERL(5, 17, 4)
mask = &PL_sv_undef;
#else
goto context_info_warnings_off;
#endif
} else if (old_warnings == pWARN_NONE) {
-#if !SU_HAS_PERL(5, 17, 4)
+#if !XSH_HAS_PERL(5, 17, 4)
context_info_warnings_off:
#endif
mask = su_newmortal_pvn(WARN_NONEstring, WARNsize);
} else if (old_warnings == pWARN_ALL) {
HV *bits;
context_info_warnings_on:
-#if SU_HAS_PERL(5, 8, 7)
+#if XSH_HAS_PERL(5, 8, 7)
bits = get_hv("warnings::Bits", 0);
if (bits) {
SV **bits_all = hv_fetchs(bits, "all", FALSE);
if (!mask)
mask = su_newmortal_pvn(WARN_ALLstring, WARNsize);
} else {
-#if SU_HAS_PERL(5, 9, 4)
+#if XSH_HAS_PERL(5, 9, 4)
mask = su_newmortal_pvn((char *) (old_warnings + 1), old_warnings[0]);
#else
mask = sv_mortalcopy(old_warnings);
}
PUSHs(mask);
}
-#if SU_HAS_PERL(5, 10, 0)
+#if XSH_HAS_PERL(5, 10, 0)
/* hints hash (10) */
{
COPHH *hints_hash = CopHINTHASH_get(cop);
--- /dev/null
+#ifndef XSH_THREADS_H
+#define XSH_THREADS_H 1
+
+#include "caps.h" /* XSH_HAS_PERL(), XSH_THREADSAFE */
+#include "util.h" /* XSH_PACKAGE, dNOOP, NOOP */
+
+#ifndef XSH_THREADS_COMPILE_TIME_PROTECTION
+# define XSH_THREADS_COMPILE_TIME_PROTECTION 0
+#endif
+
+#ifndef XSH_THREADS_USER_CONTEXT
+# define XSH_THREADS_USER_CONTEXT 1
+#endif
+
+#ifndef XSH_THREADS_USER_GLOBAL_SETUP
+# define XSH_THREADS_USER_GLOBAL_SETUP 1
+#endif
+
+#ifndef XSH_THREADS_USER_LOCAL_SETUP
+# define XSH_THREADS_USER_LOCAL_SETUP 1
+#endif
+
+#ifndef XSH_THREADS_USER_LOCAL_TEARDOWN
+# define XSH_THREADS_USER_LOCAL_TEARDOWN 1
+#endif
+
+#ifndef XSH_THREADS_USER_GLOBAL_TEARDOWN
+# define XSH_THREADS_USER_GLOBAL_TEARDOWN 1
+#endif
+
+#ifndef XSH_THREADS_PEEP_CONTEXT
+# define XSH_THREADS_PEEP_CONTEXT 0
+#endif
+
+#ifndef XSH_THREADS_HINTS_CONTEXT
+# define XSH_THREADS_HINTS_CONTEXT 0
+#endif
+
+#ifndef XSH_THREADS_USER_CLONE_NEEDS_DUP
+# define XSH_THREADS_USER_CLONE_NEEDS_DUP 0
+#endif
+
+#if XSH_THREADSAFE && (XSH_THREADS_HINTS_CONTEXT || XSH_THREADS_USER_CLONE_NEEDS_DUP)
+# define XSH_THREADS_CLONE_NEEDS_DUP 1
+#else
+# define XSH_THREADS_CLONE_NEEDS_DUP 0
+#endif
+
+#if defined(XSH_OPS_H) && (!XSH_THREADS_GLOBAL_SETUP || !XSH_THREADS_GLOBAL_TEARDOWN)
+# error settting up hook check functions require global setup/teardown
+#endif
+
+#ifndef XSH_THREADS_NEED_TEARDOWN_LATE
+# define XSH_THREADS_NEED_TEARDOWN_LATE 0
+#endif
+
+#if XSH_THREADS_NEED_TEARDOWN_LATE && (!XSH_THREADS_USER_LOCAL_TEARDOWN || !XSH_THREADS_USER_GLOBAL_TEARDOWN)
+# error you need to declare local or global teardown handlers to use the late teardown feature
+#endif
+
+#if XSH_THREADSAFE
+# ifndef MY_CXT_CLONE
+# define MY_CXT_CLONE \
+ dMY_CXT_SV; \
+ my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
+ Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
+ sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
+# endif
+#else
+# undef dMY_CXT
+# define dMY_CXT dNOOP
+# undef MY_CXT
+# define MY_CXT xsh_globaldata
+# undef START_MY_CXT
+# define START_MY_CXT static my_cxt_t MY_CXT;
+# undef MY_CXT_INIT
+# define MY_CXT_INIT NOOP
+# undef MY_CXT_CLONE
+# define MY_CXT_CLONE NOOP
+#endif
+
+#if XSH_THREADSAFE
+/* We must use preexistent global mutexes or we will never be able to destroy
+ * them. */
+# if XSH_HAS_PERL(5, 9, 3)
+# define XSH_LOADED_LOCK MUTEX_LOCK(&PL_my_ctx_mutex)
+# define XSH_LOADED_UNLOCK MUTEX_UNLOCK(&PL_my_ctx_mutex)
+# else
+# define XSH_LOADED_LOCK OP_REFCNT_LOCK
+# define XSH_LOADED_UNLOCK OP_REFCNT_UNLOCK
+# endif
+#else
+# define XSH_LOADED_LOCK NOOP
+# define XSH_LOADED_UNLOCK NOOP
+#endif
+
+static I32 xsh_loaded = 0;
+
+#if XSH_THREADSAFE && XSH_THREADS_COMPILE_TIME_PROTECTION
+
+#define PTABLE_USE_DEFAULT 1
+
+#include "ptable.h"
+
+#define ptable_loaded_store(T, K, V) ptable_default_store(aPTBL_ (T), (K), (V))
+#define ptable_loaded_delete(T, K) ptable_default_delete(aPTBL_ (T), (K))
+#define ptable_loaded_free(T) ptable_default_free(aPTBL_ (T))
+
+static ptable *xsh_loaded_cxts = NULL;
+
+static int xsh_is_loaded(pTHX_ void *cxt) {
+#define xsh_is_loaded(C) xsh_is_loaded(aTHX_ (C))
+ int res = 0;
+
+ XSH_LOADED_LOCK;
+ if (xsh_loaded_cxts && ptable_fetch(xsh_loaded_cxts, cxt))
+ res = 1;
+ XSH_LOADED_UNLOCK;
+
+ return res;
+}
+
+static int xsh_set_loaded_locked(pTHX_ void *cxt) {
+#define xsh_set_loaded_locked(C) xsh_set_loaded_locked(aTHX_ (C))
+ int global_setup = 0;
+
+ if (xsh_loaded <= 0) {
+ XSH_ASSERT(xsh_loaded == 0);
+ XSH_ASSERT(!xsh_loaded_cxts);
+ xsh_loaded_cxts = ptable_new(4);
+ global_setup = 1;
+ }
+ ++xsh_loaded;
+ XSH_ASSERT(xsh_loaded_cxts);
+ ptable_loaded_store(xsh_loaded_cxts, cxt, cxt);
+
+ return global_setup;
+}
+
+static int xsh_clear_loaded_locked(pTHX_ void *cxt) {
+#define xsh_clear_loaded_locked(C) xsh_clear_loaded_locked(aTHX_ (C))
+ int global_teardown = 0;
+
+ if (xsh_loaded > 1) {
+ XSH_ASSERT(xsh_loaded_cxts);
+ ptable_loaded_delete(xsh_loaded_cxts, cxt);
+ --xsh_loaded;
+ } else if (xsh_loaded_cxts) {
+ XSH_ASSERT(xsh_loaded == 1);
+ ptable_loaded_free(xsh_loaded_cxts);
+ xsh_loaded_cxts = NULL;
+ xsh_loaded = 0;
+ global_teardown = 1;
+ }
+
+ return global_teardown;
+}
+
+#else /* XSH_THREADS_COMPILE_TIME_PROTECTION */
+
+#define xsh_is_loaded_locked(C) (xsh_loaded > 0)
+#define xsh_set_loaded_locked(C) ((xsh_loaded++ <= 0) ? 1 : 0)
+#define xsh_clear_loaded_locked(C) ((--xsh_loaded <= 0) ? 1 : 0)
+
+#if XSH_THREADSAFE
+
+static int xsh_is_loaded(pTHX_ void *cxt) {
+#define xsh_is_loaded(C) xsh_is_loaded(aTHX_ (C))
+ int res = 0;
+
+ XSH_LOADED_LOCK;
+ res = xsh_is_loaded_locked(cxt);
+ XSH_LOADED_UNLOCK;
+
+ return res;
+}
+
+#else
+
+#define xsh_is_loaded(C) xsh_is_loaded_locked(C)
+
+#endif
+
+#endif /* !XSH_THREADS_COMPILE_TIME_PROTECTION */
+
+#define MY_CXT_KEY XSH_PACKAGE "::_guts" XS_VERSION
+
+typedef struct {
+#if XSH_THREADS_USER_CONTEXT
+ xsh_user_cxt_t cxt_user;
+#endif
+#if XSH_THREADS_PEEP_CONTEXT
+ xsh_peep_cxt_t cxt_peep;
+#endif
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_cxt_t cxt_hints;
+#endif
+#if XSH_THREADS_CLONE_NEEDS_DUP
+ tTHX owner;
+#endif
+#if !(XSH_THREADS_USER_CONTEXT || XSH_THREADS_PEEP_CONTEXT || XSH_THREADS_HINTS_CONTEXT || XSH_THREADS_CLONE_NEEDS_DUP)
+ int dummy;
+#endif
+} my_cxt_t;
+
+START_MY_CXT
+
+#if XSH_THREADS_USER_CONTEXT
+# define dXSH_CXT dMY_CXT
+# define XSH_CXT (MY_CXT.cxt_user)
+#endif
+
+#if XSH_THREADS_USER_GLOBAL_SETUP
+static void xsh_user_global_setup(pTHX);
+#endif
+
+#if XSH_THREADS_USER_LOCAL_SETUP
+# if XSH_THREADS_USER_CONTEXT
+static void xsh_user_local_setup(pTHX_ xsh_user_cxt_t *cxt);
+# else
+static void xsh_user_local_setup(pTHX);
+# endif
+#endif
+
+#if XSH_THREADS_USER_LOCAL_TEARDOWN
+# if XSH_THREADS_USER_CONTEXT
+static void xsh_user_local_teardown(pTHX_ xsh_user_cxt_t *cxt);
+# else
+static void xsh_user_local_teardown(pTHX);
+# endif
+#endif
+
+#if XSH_THREADS_USER_GLOBAL_TEARDOWN
+static void xsh_user_global_teardown(pTHX);
+#endif
+
+#if XSH_THREADSAFE && XSH_THREADS_USER_CONTEXT
+# if XSH_THREADS_USER_CLONE_NEEDS_DUP
+static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt, CLONE_PARAMS *params);
+# else
+static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt);
+# endif
+#endif
+
+#if XSH_THREADS_PEEP_CONTEXT
+static xsh_peep_cxt_t *xsh_peep_get_cxt(pTHX) {
+ dMY_CXT;
+ XSH_ASSERT(xsh_is_loaded(&MY_CXT));
+ return &MY_CXT.cxt_peep;
+}
+#endif
+
+#if XSH_THREADS_HINTS_CONTEXT
+static xsh_hints_cxt_t *xsh_hints_get_cxt(pTHX) {
+ dMY_CXT;
+ XSH_ASSERT(xsh_is_loaded(&MY_CXT));
+ return &MY_CXT.cxt_hints;
+}
+#endif
+
+#if XSH_THREADS_NEED_TEARDOWN_LATE
+
+typedef void (*xsh_teardown_late_cb)(pTHX_ void *ud);
+
+static int xsh_teardown_late_simple_free(pTHX_ SV *sv, MAGIC *mg) {
+ xsh_teardown_late_cb cb;
+
+ cb = DPTR2FPTR(xsh_teardown_late_cb, mg->mg_ptr);
+
+ XSH_LOADED_LOCK;
+ if (xsh_loaded == 0)
+ cb(aTHX_ NULL);
+ XSH_LOADED_UNLOCK;
+
+ return 0;
+}
+
+static MGVTBL xsh_teardown_late_simple_vtbl = {
+ 0,
+ 0,
+ 0,
+ 0,
+ xsh_teardown_late_simple_free
+#if MGf_COPY
+ , 0
+#endif
+#if MGf_DUP
+ , 0
+#endif
+#if MGf_LOCAL
+ , 0
+#endif
+};
+
+typedef struct {
+ xsh_teardown_late_cb cb;
+ void *ud;
+} xsh_teardown_late_token;
+
+static int xsh_teardown_late_arg_free(pTHX_ SV *sv, MAGIC *mg) {
+ xsh_teardown_late_token *tok;
+
+ tok = (xsh_teardown_late_token *) mg->mg_ptr;
+
+ XSH_LOADED_LOCK;
+ if (xsh_loaded == 0)
+ tok->cb(aTHX_ tok->ud);
+ XSH_LOADED_UNLOCK;
+
+ PerlMemShared_free(tok);
+
+ return 0;
+}
+
+static MGVTBL xsh_teardown_late_arg_vtbl = {
+ 0,
+ 0,
+ 0,
+ 0,
+ xsh_teardown_late_arg_free
+#if MGf_COPY
+ , 0
+#endif
+#if MGf_DUP
+ , 0
+#endif
+#if MGf_LOCAL
+ , 0
+#endif
+};
+
+static void xsh_teardown_late_register(pTHX_ xsh_teardown_late_cb cb, void *ud){
+#define xsh_teardown_late_register(CB, UD) xsh_teardown_late_register(aTHX_ (CB), (UD))
+ void *ptr;
+
+ if (!ud) {
+ ptr = FPTR2DPTR(void *, cb);
+ } else {
+ xsh_teardown_late_token *tok;
+
+ tok = PerlMemShared_malloc(sizeof *tok);
+ tok->cb = cb;
+ tok->ud = ud;
+
+ ptr = tok;
+ }
+
+ if (!PL_strtab)
+ PL_strtab = newHV();
+
+ sv_magicext((SV *) PL_strtab, NULL, PERL_MAGIC_ext,
+ ud ? &xsh_teardown_late_arg_vtbl : &xsh_teardown_late_simple_vtbl,
+ ptr, 0);
+
+ return;
+}
+
+#endif /* XSH_THREADS_NEED_TEARDOWN_LATE */
+
+static void xsh_teardown(pTHX_ void *root) {
+ dMY_CXT;
+
+#if XSH_THREADS_USER_LOCAL_TEARDOWN
+# if XSH_THREADS_USER_CONTEXT
+ xsh_user_local_teardown(aTHX_ &XSH_CXT);
+# else
+ xsh_user_local_teardown(aTHX);
+# endif
+#endif
+
+#if XSH_THREADS_PEEP_CONTEXT
+ xsh_peep_local_teardown(aTHX_ &MY_CXT.cxt_peep);
+#endif
+
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_local_teardown(aTHX_ &MY_CXT.cxt_hints);
+#endif
+
+ XSH_LOADED_LOCK;
+
+ if (xsh_clear_loaded_locked(&MY_CXT)) {
+#if XSH_THREADS_USER_GLOBAL_TEARDOWN
+ xsh_user_global_teardown(aTHX);
+#endif
+
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_global_teardown(aTHX);
+#endif
+ }
+
+ XSH_LOADED_UNLOCK;
+
+ return;
+}
+
+static void xsh_setup(pTHX) {
+#define xsh_setup() xsh_setup(aTHX)
+ MY_CXT_INIT; /* Takes/release PL_my_ctx_mutex */
+
+ XSH_LOADED_LOCK;
+
+ if (xsh_set_loaded_locked(&MY_CXT)) {
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_global_setup(aTHX);
+#endif
+
+#if XSH_THREADS_USER_GLOBAL_SETUP
+ xsh_user_global_setup(aTHX);
+#endif
+ }
+
+ XSH_LOADED_UNLOCK;
+
+#if XSH_THREADS_CLONE_NEEDS_DUP
+ MY_CXT.owner = aTHX;
+#endif
+
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_local_setup(aTHX_ &MY_CXT.cxt_hints);
+#endif
+
+#if XSH_THREADS_PEEP_CONTEXT
+ xsh_peep_local_setup(aTHX_ &MY_CXT.cxt_peep);
+#endif
+
+#if XSH_THREADS_USER_LOCAL_SETUP
+# if XSH_THREADS_USER_CONTEXT
+ xsh_user_local_setup(aTHX_ &XSH_CXT);
+# else
+ xsh_user_local_setup(aTHX);
+# endif
+#endif
+
+ call_atexit(xsh_teardown, NULL);
+
+ return;
+}
+
+#if XSH_THREADSAFE
+
+static void xsh_clone(pTHX) {
+#define xsh_clone() xsh_clone(aTHX)
+ const my_cxt_t *old_cxt;
+ my_cxt_t *new_cxt;
+
+ {
+ dMY_CXT;
+ old_cxt = &MY_CXT;
+ }
+
+ {
+ int global_setup;
+
+ MY_CXT_CLONE;
+ new_cxt = &MY_CXT;
+
+ XSH_LOADED_LOCK;
+ global_setup = xsh_set_loaded_locked(new_cxt);
+ XSH_ASSERT(!global_setup);
+ XSH_LOADED_UNLOCK;
+
+#if XSH_THREADS_CLONE_NEEDS_DUP
+ new_cxt->owner = aTHX;
+#endif
+ }
+
+ {
+#if XSH_THREADS_CLONE_NEEDS_DUP
+ XSH_DUP_PARAMS_TYPE params;
+ xsh_dup_params_init(params, old_cxt->owner);
+#endif
+
+#if XSH_THREADS_PEEP_CONTEXT
+ xsh_peep_clone(aTHX_ &old_cxt->cxt_peep, &new_cxt->cxt_peep);
+#endif
+
+#if XSH_THREADS_HINTS_CONTEXT
+ xsh_hints_clone(aTHX_ &old_cxt->cxt_hints, &new_cxt->cxt_hints,
+ xsh_dup_params_ptr(params));
+#endif
+
+#if XSH_THREADS_USER_CONTEXT
+# if XSH_THREADS_USER_CLONE_NEEDS_DUP
+ xsh_user_clone(aTHX_ &old_cxt->cxt_user, &new_cxt->cxt_user,
+ xsh_dup_params_ptr(params));
+# else
+ xsh_user_clone(aTHX_ &old_cxt->cxt_user, &new_cxt->cxt_user);
+# endif
+#endif
+
+#if XSH_THREADS_CLONE_NEEDS_DUP
+ xsh_dup_params_deinit(params);
+#endif
+ }
+
+ return;
+}
+
+#endif /* XSH_THREADSAFE */
+
+#endif /* XSH_THREADS_H */
projects / perl / modules / Scope-Upper.git / commitdiff