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Centralize interposer init with pthread_once and use CLOCK_MONOTONIC #1

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96 changes: 36 additions & 60 deletions code/mperf.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,39 +3,46 @@
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>

int cur_usage = 0;
size_t time_base = 0;
static size_t time_base = 0;

char buf[255];
static thread_local bool allow_record = true;

bool allow_record = true;
static const int MIN_RECORD = 32; // 选择要记录的最小内存单元

const int MIN_RECORD = 32; // 选择要记录的最小内存单元
static pthread_once_t init_once = PTHREAD_ONCE_INIT;
static void *(*malloc_cp)(size_t) = nullptr;
static void *(*realloc_cp)(void *, size_t) = nullptr;
static void *(*calloc_cp)(size_t, size_t) = nullptr;
static void (*free_cp)(void *) = nullptr;

size_t get_cur_ms() {
struct timeval tv;
gettimeofday(&tv, NULL);
size_t time_stamp = tv.tv_sec * 1000 + tv.tv_usec / 1000;
return time_stamp;
static size_t get_cur_ms() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return static_cast<size_t>(ts.tv_sec) * 1000 +
static_cast<size_t>(ts.tv_nsec) / 1000000;
}

static void init_real_functions() {
time_base = get_cur_ms();
malloc_cp = reinterpret_cast<void *(*)(size_t)>(dlsym(RTLD_NEXT, "malloc"));
realloc_cp =
reinterpret_cast<void *(*)(void *, size_t)>(dlsym(RTLD_NEXT, "realloc"));
calloc_cp =
reinterpret_cast<void *(*)(size_t, size_t)>(dlsym(RTLD_NEXT, "calloc"));
free_cp = reinterpret_cast<void (*)(void *)>(dlsym(RTLD_NEXT, "free"));

char *err = dlerror();
if (err != NULL) {
_exit(1);
}
}


void *malloc(size_t size) {
static int flag = 0;
static void *(*malloc_cp)(unsigned long);

if (flag == 0) {
time_base = get_cur_ms();
malloc_cp = (void *(*)(unsigned long))dlsym(RTLD_NEXT, "malloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *ptr = malloc_cp(size);

Expand All @@ -50,6 +57,7 @@ void *malloc(size_t size) {
printf("%s ", symbols[i]);
}
printf("\n");
free_cp(symbols);
allow_record = true;
}

Expand All @@ -58,18 +66,7 @@ void *malloc(size_t size) {


void *realloc(void *ptr, size_t size) {
static int flag = 0;
static void *(*realloc_cp)(void *, size_t);

if (flag == 0) {
time_base = get_cur_ms();
realloc_cp = (void *(*)(void *, size_t))dlsym(RTLD_NEXT, "realloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *new_ptr = realloc_cp(ptr, size);

Expand All @@ -84,25 +81,15 @@ void *realloc(void *ptr, size_t size) {
printf("%s ", symbols[i]);
}
printf("\n");
free_cp(symbols);
allow_record = true;
}

return new_ptr;
}

void *calloc(size_t nmemb, size_t size) {
static int flag = 0;
static void *(*calloc_cp)(size_t, size_t);

if (flag == 0) {
time_base = get_cur_ms();
calloc_cp = (void *(*)(size_t, size_t))dlsym(RTLD_NEXT, "calloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *ptr = calloc_cp(nmemb, size);

Expand All @@ -117,6 +104,7 @@ void *calloc(size_t nmemb, size_t size) {
printf("%s ", symbols[i]);
}
printf("\n");
free_cp(symbols);
allow_record = true;
}

Expand All @@ -125,19 +113,7 @@ void *calloc(size_t nmemb, size_t size) {


void free(void *ptr) {

static int flag = 0;
static void (*free_cp)(void *);

if (flag == 0) {
time_base = get_cur_ms();
free_cp = (void (*)(void *))dlsym(RTLD_NEXT, "free");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

if (allow_record == true) {
allow_record = false;
Expand Down
93 changes: 33 additions & 60 deletions code/mperf_less.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,39 +3,46 @@
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>

int cur_usage = 0;
size_t time_base = 0;
static size_t time_base = 0;

char buf[255];
static thread_local bool allow_record = true;

bool allow_record = true;
static const int MIN_RECORD = 0; // 选择要记录的最小内存单元

const int MIN_RECORD = 0; // 选择要记录的最小内存单元
static pthread_once_t init_once = PTHREAD_ONCE_INIT;
static void *(*malloc_cp)(size_t) = nullptr;
static void *(*realloc_cp)(void *, size_t) = nullptr;
static void *(*calloc_cp)(size_t, size_t) = nullptr;
static void (*free_cp)(void *) = nullptr;

size_t get_cur_ms() {
struct timeval tv;
gettimeofday(&tv, NULL);
size_t time_stamp = tv.tv_sec * 1000 + tv.tv_usec / 1000;
return time_stamp;
static size_t get_cur_ms() {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return static_cast<size_t>(ts.tv_sec) * 1000 +
static_cast<size_t>(ts.tv_nsec) / 1000000;
}

static void init_real_functions() {
time_base = get_cur_ms();
malloc_cp = reinterpret_cast<void *(*)(size_t)>(dlsym(RTLD_NEXT, "malloc"));
realloc_cp =
reinterpret_cast<void *(*)(void *, size_t)>(dlsym(RTLD_NEXT, "realloc"));
calloc_cp =
reinterpret_cast<void *(*)(size_t, size_t)>(dlsym(RTLD_NEXT, "calloc"));
free_cp = reinterpret_cast<void (*)(void *)>(dlsym(RTLD_NEXT, "free"));

char *err = dlerror();
if (err != NULL) {
_exit(1);
}
}


void *malloc(size_t size) {
static int flag = 0;
static void *(*malloc_cp)(unsigned long);

if (flag == 0) {
time_base = get_cur_ms();
malloc_cp = (void *(*)(unsigned long))dlsym(RTLD_NEXT, "malloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *ptr = malloc_cp(size);

Expand All @@ -58,18 +65,7 @@ void *malloc(size_t size) {


void *realloc(void *ptr, size_t size) {
static int flag = 0;
static void *(*realloc_cp)(void *, size_t);

if (flag == 0) {
time_base = get_cur_ms();
realloc_cp = (void *(*)(void *, size_t))dlsym(RTLD_NEXT, "realloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *new_ptr = realloc_cp(ptr, size);

Expand All @@ -91,18 +87,7 @@ void *realloc(void *ptr, size_t size) {
}

void *calloc(size_t nmemb, size_t size) {
static int flag = 0;
static void *(*calloc_cp)(size_t, size_t);

if (flag == 0) {
time_base = get_cur_ms();
calloc_cp = (void *(*)(size_t, size_t))dlsym(RTLD_NEXT, "calloc");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

void *ptr = calloc_cp(nmemb, size);

Expand All @@ -125,19 +110,7 @@ void *calloc(size_t nmemb, size_t size) {


void free(void *ptr) {

static int flag = 0;
static void (*free_cp)(void *);

if (flag == 0) {
time_base = get_cur_ms();
free_cp = (void (*)(void *))dlsym(RTLD_NEXT, "free");
char *err;
if ((err = dlerror()) != NULL) {
_exit(1);
}
flag = 1;
}
pthread_once(&init_once, init_real_functions);

if (allow_record == true) {
allow_record = false;
Expand Down