mirror of https://gitee.com/openkylin/qemu.git
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
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#include <stdlib.h>
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#include <stdio.h>
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#include <signal.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <pthread.h>
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#include <sys/wait.h>
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#include <sched.h>
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int thread1_func(void *arg)
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{
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int i;
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char buf[512];
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for(i=0;i<10;i++) {
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snprintf(buf, sizeof(buf), "thread1: %d %s\n", i, (char *)arg);
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write(1, buf, strlen(buf));
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usleep(100 * 1000);
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}
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return 0;
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}
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int thread2_func(void *arg)
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{
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int i;
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char buf[512];
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for(i=0;i<20;i++) {
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snprintf(buf, sizeof(buf), "thread2: %d %s\n", i, (char *)arg);
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write(1, buf, strlen(buf));
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usleep(120 * 1000);
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}
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return 0;
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}
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#define STACK_SIZE 16384
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void test_clone(void)
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{
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uint8_t *stack1, *stack2;
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int pid1, pid2, status1, status2;
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stack1 = malloc(STACK_SIZE);
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pid1 = clone(thread1_func, stack1 + STACK_SIZE,
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CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello1");
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stack2 = malloc(STACK_SIZE);
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pid2 = clone(thread2_func, stack2 + STACK_SIZE,
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CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello2");
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while (waitpid(pid1, &status1, 0) != pid1);
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while (waitpid(pid2, &status2, 0) != pid2);
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printf("status1=0x%x\n", status1);
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printf("status2=0x%x\n", status2);
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printf("End of clone test.\n");
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}
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int main(int argc, char **argv)
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{
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test_clone();
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return 0;
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}
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