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memory fragmentation reporting in INFO also added for Mac OS X

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This commit is contained in:
antirez 2010-09-02 10:57:58 +02:00
parent eddb388ef9
commit 73db2acc37
2 changed files with 38 additions and 8 deletions
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5
src/config.h
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@ -26,6 +26,11 @@
#define HAVE_PROCFS 1
#endif
/* test for task_info() */
#if defined(__APPLE__)
#define HAVE_TASKINFO 1
#endif
/* test for backtrace() */
#if defined(__APPLE__) || defined(__linux__)
#define HAVE_BACKTRACE 1

41
src/zmalloc.c
View File

@ -32,10 +32,7 @@
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "config.h"
#if defined(__sun)
@ -176,8 +173,14 @@ void zmalloc_enable_thread_safeness(void) {
}
/* Fragmentation = RSS / allocated-bytes */
#if defined(HAVE_PROCFS)
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
float zmalloc_get_fragmentation_ratio(void) {
#ifdef HAVE_PROCFS
size_t allocated = zmalloc_used_memory();
int page = sysconf(_SC_PAGESIZE);
size_t rss;
@ -208,7 +211,29 @@ float zmalloc_get_fragmentation_ratio(void) {
rss = strtoll(p,NULL,10);
rss *= page;
return (float)rss/allocated;
#else
return 0;
#endif
}
#elif defined(HAVE_TASKINFO)
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <mach/task.h>
#include <mach/mach_init.h>
float zmalloc_get_fragmentation_ratio(void) {
task_t task = MACH_PORT_NULL;
struct task_basic_info t_info;
mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
if (task_for_pid(current_task(), getpid(), &task) != KERN_SUCCESS)
return 0;
task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count);
return (float)t_info.resident_size/zmalloc_used_memory();
}
#else
float zmalloc_get_fragmentation_ratio(void) {
return 0;
}
#endif