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2b.c
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2b.c
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#include <pthread.h>
#include <dlfcn.h>
#include <stdlib.h>
#include "common.h"
void *task1(void *arg)
{
void *handle = dlopen("./1.so", RTLD_LAZY | RTLD_LOCAL);
if (!handle) {
ERR("failed to dlopen: %s", dlerror());
goto leave;
}
void (*_Py_Initialize)() = dlsym(handle, "Py_Initialize");
if (!_Py_Initialize) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
int (*_PyRun_SimpleString)(const char *) = dlsym(handle, "PyRun_SimpleString");
if (!_PyRun_SimpleString) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
void (*_Py_Finalize)() = dlsym(handle, "Py_Finalize");
if (!_Py_Finalize) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
_Py_Initialize();
_PyRun_SimpleString("count = 23345678");
_PyRun_SimpleString(
"import time\n"
"print 'task1: {0:.6f}'.format(time.time())\n"
"time.sleep(10)\n"
"print 'task1: {0:.6f}'.format(time.time())\n"
"print 'task1: {0}'.format(count)\n"
);
_Py_Finalize();
leave:
if (handle)
dlclose(handle);
return NULL;
}
void *task2(void *arg)
{
void *handle = dlopen("./2.so", RTLD_LAZY | RTLD_LOCAL);
if (!handle) {
ERR("failed to dlopen: %s", dlerror());
goto leave;
}
void (*_Py_Initialize)() = dlsym(handle, "Py_Initialize");
if (!_Py_Initialize) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
int (*_PyRun_SimpleString)(const char *) = dlsym(handle, "PyRun_SimpleString");
if (!_PyRun_SimpleString) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
void (*_Py_Finalize)() = dlsym(handle, "Py_Finalize");
if (!_Py_Finalize) {
ERR("failed to dlsym: %s", dlerror());
goto leave;
}
_Py_Initialize();
_PyRun_SimpleString("count = 23345678");
_PyRun_SimpleString(
"import time\n"
"print 'task2: {0:.6f}'.format(time.time())\n"
"print 'task2: {0}'.format(count)\n"
"for i in xrange(23345678):\n"
" count += 1\n"
"print 'task2: {0:.6f}'.format(time.time())\n"
);
_Py_Finalize();
leave:
if (handle)
dlclose(handle);
return NULL;
}
int main()
{
int ret = 1;
pthread_t t1, t2;
system("cp /usr/lib/x86_64-linux-gnu/libpython2.7.so 1.so");
system("cp /usr/lib/x86_64-linux-gnu/libpython2.7.so 2.so");
if (pthread_create(&t1, NULL, task1, NULL) != 0) {
ERR("failed to pthread_create");
goto leave;
}
if (pthread_create(&t2, NULL, task2, NULL) != 0) {
ERR("failed to pthread_create");
goto leave;
}
pthread_join(t1, NULL);
pthread_join(t2, NULL);
ret = 0;
leave:
system("rm -f 1.so");
system("rm -f 2.so");
return ret;
}