乙個測試ACE各種記憶體分配策略效率的程式

在256m記憶體的redhat9虛擬機器上執行申請釋放10000000，每次大小為1k，結果如下：

testmalloc loop 10000 use time 32.950000 s

testcached loop 10000 use time 1.730000 s

testmallocmmap loop 10000 use time 5.050000 s

testmallocmmaplite loop 10000 use time 5.030000 s

testmalloclocal loop 10000 use time 0.620000 s

testmalloclocalmutex loop 10000 use time 4.250000 s

testmalloc_brk_mutex loop 10000 use time 0.600000 s

testmallocsharemutex loop 10000 use time 4.360000 s

#include "ace/os_ns_stdio.h"

#include "ace/os_ns_string.h"

#include "ace/malloc_t.h"

#include "ace/null_mutex.h"

#include "time.h"

#include "assert.h"

clock_t _begin;

clock_t _end;

int _loop;

#define begin(n) /

_begin = clock(); /

for (_loop = 0; _loop < n; _loop++)           /

_end = clock(); /

printf("%s loop %d use time %lf s/n", s, _loop ,  (double)(_end - _begin) / (double)clocks_per_sec);

const int maxsize = 1024;

void *p[1000];

void testmalloc()

for (i = 0; i < 1000; i++)}

typedef char block[maxsize];

typedef ace_dynamic_cached_allocatorallocator;

allocator cache(1000, maxsize);

void testcached()

for (i = 0; i < 1000; i++)}

typedef ace_mallocmalloc_mmap;

typedef ace_mallocmalloc_local;

typedef ace_mallocmalloc_local_mutex;

typedef ace_mallocmalloc_share_mutex;

typedef ace_mallocmalloc_sbrk_mutex;

typedef ace_mallocmalloc_mmap_lite;

template

void testmalloc(t &ml)

for (i = 0; i < 1000; i++)}

int main(int argc,char* argv)

乙個測試ACE各種記憶體分配策略效率的程式

在256m記憶體的redhat9虛擬機器上執行申請釋放10000000，每次大小為1k，結果如下 testmalloc loop 10000 use time 32.950000 s testcached loop 10000 use time 1.730000 s testmallocmmap l...

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