+/* This file is part of the Linux::SysInfo Perl module.
+ * See http://search.cpan.org/dist/Linux-SysInfo/
+ * Vincent Pit - 2007 */
+
+#include <linux/version.h> /* LINUX_VERSION_CODE, KERNEL_VERSION() */
+#include <sys/sysinfo.h> /* <struct sysinfo>, sysinfo(), SI_LOAD_SHIFT */
+
+#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
-#include <linux/version.h> /* LINUX_VERSION_CODE, KERNEL_VERSION() */
-#include <sys/sysinfo.h> /* <struct sysinfo>, sysinfo(), SI_LOAD_SHIFT */
+#define __PACKAGE__ "Linux::SysInfo"
+#define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
+
+/* --- Extended fields ----------------------------------------------------- */
#if ((defined(__i386__) || defined(__x86_64__)) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 3, 23))) || (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 3, 48))
-# define SYSINFO_EXTENDED 1
+# define LS_HAS_EXTENDED 1
+#else
+# define LS_HAS_EXTENDED 0
+#endif
+
+/* --- Keys ---------------------------------------------------------------- */
+
+#define LS_KEY(K) (ls_key_##K##_sv)
+#if PERL_REVISION <= 4 || (PERL_REVISION == 5 && PERL_VERSION <= 6)
+/* newSVpvn_share doesn't exist in perl-5.6.x */
+# define LS_HASH(K) (ls_key_##K##_hash)
+# define LS_KEY_DECLARE(K) STATIC const char LS_KEY(K)[] = #K; \
+ STATIC U32 LS_HASH(K) = 0
+# define LS_KEY_DEFINE(K) PERL_HASH(LS_HASH(K), LS_KEY(K), sizeof(#K)-1)
+# define LS_KEY_STORE(H,K,V) hv_store((H), LS_KEY(K), sizeof(#K)-1, \
+ (V), LS_HASH(K))
#else
-# define SYSINFO_EXTENDED 0
+# if PERL_REVISION > 5 || (PERL_REVISION == 5 && (PERL_VERSION > 9 || (PERL_VERSION == 9 && PERL_SUBVERSION >= 3)))
+/* From perl-5.9.3 (#24802), the key is only a SVt_PV and one can get the hash
+ * value with the SvSHARED_HASH() macro. */
+# define LS_HASH(K) SvSHARED_HASH(LS_KEY(K))
+# else
+/* Before, the key was a SVt_PVIV and the hash was stored in the UV field. */
+# define LS_HASH(K) SvUVX(LS_KEY(K))
+# endif
+# define LS_KEY_DECLARE(K) STATIC SV *LS_KEY(K) = NULL
+# define LS_KEY_DEFINE(K) LS_KEY(K) = newSVpvn_share(#K, sizeof(#K)-1, 0)
+# define LS_KEY_STORE(H,K,V) hv_store_ent((H), LS_KEY(K), (V), LS_HASH(K))
#endif
-typedef struct {
- const char* key;
- U32 klen;
- U32 hash;
-} sysinfo_key;
-
-#define SYSINFO_KEY_SET_HASH(S) PERL_HASH((S).hash, (S).key, (S).klen)
-#define SYSINFO_KEY_STORE(H,S,V) hv_store((H), (S).key, (S).klen, (V), (S).hash)
-
-static sysinfo_key key_uptime = { "uptime", 6, 0 };
-static sysinfo_key key_load1 = { "load1", 5, 0 };
-static sysinfo_key key_load5 = { "load5", 5, 0 };
-static sysinfo_key key_load15 = { "load15", 6, 0 };
-static sysinfo_key key_totalram = { "totalram", 8, 0 };
-static sysinfo_key key_freeram = { "freeram", 7, 0 };
-static sysinfo_key key_sharedram = { "sharedram", 9, 0 };
-static sysinfo_key key_bufferram = { "bufferram", 9, 0 };
-static sysinfo_key key_totalswap = { "totalswap", 9, 0 };
-static sysinfo_key key_freeswap = { "freeswap", 8, 0 };
-static sysinfo_key key_procs = { "procs", 5, 0 };
-#if SYSINFO_EXTENDED
-static sysinfo_key key_totalhigh = { "totalhigh", 9, 0 };
-static sysinfo_key key_freehigh = { "freehigh", 8, 0 };
-static sysinfo_key key_mem_unit = { "mem_unit", 8, 0 };
-#endif /* SYSINFO_EXTENDED */
+LS_KEY_DECLARE(uptime);
+LS_KEY_DECLARE(load1);
+LS_KEY_DECLARE(load5);
+LS_KEY_DECLARE(load15);
+LS_KEY_DECLARE(totalram);
+LS_KEY_DECLARE(freeram);
+LS_KEY_DECLARE(sharedram);
+LS_KEY_DECLARE(bufferram);
+LS_KEY_DECLARE(totalswap);
+LS_KEY_DECLARE(freeswap);
+LS_KEY_DECLARE(procs);
+#if LS_HAS_EXTENDED
+LS_KEY_DECLARE(totalhigh);
+LS_KEY_DECLARE(freehigh);
+LS_KEY_DECLARE(mem_unit);
+#endif /* LS_HAS_EXTENDED */
+
+/* --- XS ------------------------------------------------------------------ */
MODULE = Linux::SysInfo PACKAGE = Linux::SysInfo
BOOT:
{
HV *stash;
- stash = gv_stashpv("Linux::SysInfo", TRUE);
- newCONSTSUB(stash, "LS_HAS_EXTENDED", newSViv(SYSINFO_EXTENDED));
-
- SYSINFO_KEY_SET_HASH(key_uptime);
- SYSINFO_KEY_SET_HASH(key_load1);
- SYSINFO_KEY_SET_HASH(key_load5);
- SYSINFO_KEY_SET_HASH(key_load15);
- SYSINFO_KEY_SET_HASH(key_totalram);
- SYSINFO_KEY_SET_HASH(key_freeram);
- SYSINFO_KEY_SET_HASH(key_sharedram);
- SYSINFO_KEY_SET_HASH(key_bufferram);
- SYSINFO_KEY_SET_HASH(key_totalswap);
- SYSINFO_KEY_SET_HASH(key_freeswap);
- SYSINFO_KEY_SET_HASH(key_procs);
-#if SYSINFO_EXTENDED
- SYSINFO_KEY_SET_HASH(key_totalhigh);
- SYSINFO_KEY_SET_HASH(key_freehigh);
- SYSINFO_KEY_SET_HASH(key_mem_unit);
-#endif /* SYSINFO_EXTENDED */
+ stash = gv_stashpvn(__PACKAGE__, __PACKAGE_LEN__, TRUE);
+ newCONSTSUB(stash, "LS_HAS_EXTENDED", newSViv(LS_HAS_EXTENDED));
+
+ LS_KEY_DEFINE(uptime);
+ LS_KEY_DEFINE(load1);
+ LS_KEY_DEFINE(load5);
+ LS_KEY_DEFINE(load15);
+ LS_KEY_DEFINE(totalram);
+ LS_KEY_DEFINE(freeram);
+ LS_KEY_DEFINE(sharedram);
+ LS_KEY_DEFINE(bufferram);
+ LS_KEY_DEFINE(totalswap);
+ LS_KEY_DEFINE(freeswap);
+ LS_KEY_DEFINE(procs);
+#if LS_HAS_EXTENDED
+ LS_KEY_DEFINE(totalhigh);
+ LS_KEY_DEFINE(freehigh);
+ LS_KEY_DEFINE(mem_unit);
+#endif /* LS_HAS_EXTENDED */
}
-SV *
-sysinfo()
+SV *sysinfo()
+PROTOTYPE:
PREINIT:
struct sysinfo si;
NV l;
- HV *h;
+ HV *hv;
CODE:
- if (sysinfo(&si) == -1) {
- XSRETURN_UNDEF;
- }
+ if (sysinfo(&si) == -1) XSRETURN_UNDEF;
- h = newHV(); /* mortalized in RETVAL */
+ hv = newHV();
- SYSINFO_KEY_STORE(h, key_uptime, newSViv(si.uptime));
+ LS_KEY_STORE(hv, uptime, newSViv(si.uptime));
l = ((NV) si.loads[0]) / ((NV) (((U32) 1) << ((U32) SI_LOAD_SHIFT)));
- SYSINFO_KEY_STORE(h, key_load1, newSVnv(l));
+ LS_KEY_STORE(hv, load1, newSVnv(l));
l = ((NV) si.loads[1]) / ((NV) (((U32) 1) << ((U32) SI_LOAD_SHIFT)));
- SYSINFO_KEY_STORE(h, key_load5, newSVnv(l));
+ LS_KEY_STORE(hv, load5, newSVnv(l));
l = ((NV) si.loads[2]) / ((NV) (((U32) 1) << ((U32) SI_LOAD_SHIFT)));
- SYSINFO_KEY_STORE(h, key_load15, newSVnv(l));
-
- SYSINFO_KEY_STORE(h, key_totalram, newSVuv(si.totalram));
- SYSINFO_KEY_STORE(h, key_freeram, newSVuv(si.freeram));
- SYSINFO_KEY_STORE(h, key_sharedram, newSVuv(si.sharedram));
- SYSINFO_KEY_STORE(h, key_bufferram, newSVuv(si.bufferram));
- SYSINFO_KEY_STORE(h, key_totalswap, newSVuv(si.totalswap));
- SYSINFO_KEY_STORE(h, key_freeswap, newSVuv(si.freeswap));
- SYSINFO_KEY_STORE(h, key_procs, newSVuv(si.procs));
-#if SYSINFO_EXTENDED
- SYSINFO_KEY_STORE(h, key_totalhigh, newSVuv(si.totalhigh));
- SYSINFO_KEY_STORE(h, key_freehigh, newSVuv(si.freehigh));
- SYSINFO_KEY_STORE(h, key_mem_unit, newSVuv(si.mem_unit));
-#endif /* SYSINFO_EXTENDED */
-
- RETVAL = newRV_noinc((SV *) h);
+ LS_KEY_STORE(hv, load15, newSVnv(l));
+
+ LS_KEY_STORE(hv, totalram, newSVuv(si.totalram));
+ LS_KEY_STORE(hv, freeram, newSVuv(si.freeram));
+ LS_KEY_STORE(hv, sharedram, newSVuv(si.sharedram));
+ LS_KEY_STORE(hv, bufferram, newSVuv(si.bufferram));
+ LS_KEY_STORE(hv, totalswap, newSVuv(si.totalswap));
+ LS_KEY_STORE(hv, freeswap, newSVuv(si.freeswap));
+ LS_KEY_STORE(hv, procs, newSVuv(si.procs));
+#if LS_HAS_EXTENDED
+ LS_KEY_STORE(hv, totalhigh, newSVuv(si.totalhigh));
+ LS_KEY_STORE(hv, freehigh, newSVuv(si.freehigh));
+ LS_KEY_STORE(hv, mem_unit, newSVuv(si.mem_unit));
+#endif /* LS_HAS_EXTENDED */
+
+ RETVAL = newRV_noinc((SV *) hv);
OUTPUT:
RETVAL
projects / perl / modules / Linux-SysInfo.git / blobdiff