diff options
Diffstat (limited to 'util-src/pposix.c')
| -rw-r--r-- | util-src/pposix.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/util-src/pposix.c b/util-src/pposix.c index a5a89d55..65f8b4ab 100644 --- a/util-src/pposix.c +++ b/util-src/pposix.c @@ -34,6 +34,11 @@ #include "lua.h" #include "lauxlib.h" +#if (defined(_SVID_SOURCE) && !defined(WITHOUT_MALLINFO)) + #include <malloc.h> + #define WITH_MALLINFO +#endif + /* Daemonization support */ static int lc_daemonize(lua_State *L) @@ -612,6 +617,31 @@ int lc_setenv(lua_State* L) return 1; } +#ifdef WITH_MALLINFO +int lc_meminfo(lua_State* L) +{ + struct mallinfo info = mallinfo(); + lua_newtable(L); + /* This is the total size of memory allocated with sbrk by malloc, in bytes. */ + lua_pushinteger(L, info.arena); + lua_setfield(L, -2, "allocated"); + /* This is the total size of memory allocated with mmap, in bytes. */ + lua_pushinteger(L, info.hblkhd); + lua_setfield(L, -2, "allocated_mmap"); + /* This is the total size of memory occupied by chunks handed out by malloc. */ + lua_pushinteger(L, info.uordblks); + lua_setfield(L, -2, "used"); + /* This is the total size of memory occupied by free (not in use) chunks. */ + lua_pushinteger(L, info.fordblks); + lua_setfield(L, -2, "unused"); + /* This is the size of the top-most releasable chunk that normally borders the + end of the heap (i.e., the high end of the virtual address space's data segment). */ + lua_pushinteger(L, info.keepcost); + lua_setfield(L, -2, "returnable"); + return 1; +} +#endif + /* Register functions */ int luaopen_util_pposix(lua_State *L) @@ -645,6 +675,10 @@ int luaopen_util_pposix(lua_State *L) { "setenv", lc_setenv }, +#ifdef WITH_MALLINFO + { "meminfo", lc_meminfo }, +#endif + { NULL, NULL } }; |