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ruby--ruby/ext/-test-/memory_status/memory_status.c
Takashi Kokubun 5b21e94beb Expand tabs [ci skip]
[Misc #18891]
2022-07-21 09:42:04 -07:00

80 lines
2.1 KiB
C

#include "ruby.h"
#ifdef __APPLE__
# include <mach/mach.h>
# include <mach/message.h>
# include <mach/kern_return.h>
# include <mach/task_info.h>
#elif defined _WIN32
# include <psapi.h>
#endif
static VALUE cMemoryStatus;
#undef HAVE_RSS
#undef HAVE_PEAK
static VALUE
read_status(VALUE self)
{
VALUE size = INT2FIX(0);
#if defined __APPLE__
# define HAVE_RSS 1
VALUE rss;
kern_return_t error;
# if defined MACH_TASK_BASIC_INFO
const task_flavor_t flavor = MACH_TASK_BASIC_INFO;
mach_msg_type_number_t out_count = MACH_TASK_BASIC_INFO_COUNT;
mach_task_basic_info_data_t taskinfo;
# else
const task_flavor_t flavor = TASK_BASIC_INFO;
mach_msg_type_number_t out_count = TASK_BASIC_INFO_COUNT;
task_basic_info_data_t taskinfo;
# endif
taskinfo.virtual_size = 0;
taskinfo.resident_size = 0;
error = task_info(mach_task_self(), flavor,
(task_info_t)&taskinfo, &out_count);
if (error != KERN_SUCCESS) return Qnil;
#ifndef ULL2NUM
/* "long long" does not exist here, use size_t instead. */
#define ULL2NUM SIZET2NUM
#endif
size = ULL2NUM(taskinfo.virtual_size);
rss = ULL2NUM(taskinfo.resident_size);
rb_struct_aset(self, INT2FIX(1), rss);
#elif defined _WIN32
# define HAVE_RSS 1
# define HAVE_PEAK 1
VALUE rss, peak;
PROCESS_MEMORY_COUNTERS c;
c.cb = sizeof(c);
if (!GetProcessMemoryInfo(GetCurrentProcess(), &c, c.cb))
return Qnil;
size = SIZET2NUM(c.PagefileUsage);
rss = SIZET2NUM(c.WorkingSetSize);
peak = SIZET2NUM(c.PeakWorkingSetSize);
rb_struct_aset(self, INT2FIX(2), peak);
#endif
#ifdef HAVE_RSS
rb_struct_aset(self, INT2FIX(1), rss);
#endif
rb_struct_aset(self, INT2FIX(0), size);
return self;
}
void
Init_memory_status(void)
{
VALUE mMemory = rb_define_module("Memory");
cMemoryStatus =
rb_struct_define_under(mMemory, "Status", "size",
#ifdef HAVE_RSS
"rss",
#endif
#ifdef HAVE_PEAK
"peak",
#endif
(char *)NULL);
rb_define_method(cMemoryStatus, "_update", read_status, 0);
}