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memory_status.c: system call

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* ext/-test-/memory_status/memory_status.c: get memory sizes by
  mach task_info system call.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56376 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-10-08 01:34:27 +00:00
parent 75838104e7
commit f0e1d72316
4 changed files with 65 additions and 2 deletions
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8
ext/-test-/memory_status/extconf.rb Normal file
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@ -0,0 +1,8 @@
case RUBY_PLATFORM
when /darwin/
ok = true
end
if ok
create_makefile("-test-/memory_status")
end

45
ext/-test-/memory_status/memory_status.c Normal file
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#include "ruby.h"
#ifdef __APPLE__
# include <mach/mach.h>
# include <mach/message.h>
# include <mach/kern_return.h>
# include <mach/task_info.h>
#endif
static VALUE cMemoryStatus;
static VALUE
read_status(VALUE self)
{
VALUE size = INT2FIX(0);
#if defined __APPLE__
VALUE rss;
kern_return_t error;
mach_msg_type_number_t out_count;
mach_task_basic_info_data_t taskinfo;
taskinfo.virtual_size = 0;
out_count = MACH_TASK_BASIC_INFO_COUNT;
error = task_info(mach_task_self(), MACH_TASK_BASIC_INFO,
(task_info_t)&taskinfo, &out_count);
if (error != KERN_SUCCESS) return Qnil;
size = ULL2NUM(taskinfo.virtual_size);
rss = ULL2NUM(taskinfo.resident_size);
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",
#if defined __APPLE__
"rss",
#endif
(char *)NULL);
rb_define_method(cMemoryStatus, "_update", read_status, 0);
}