95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include "./test_chk.h"
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#include "./test_rusage.h"
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#define TEST_NAME "CT_007"
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int main(int argc, char* argv[])
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{
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int rc;
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char *buf = NULL, *buf_child = NULL;
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struct rusage cur_rusage;
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long cur_utime, cur_stime, cur_maxrss;
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long delta_utime, delta_stime, delta_maxrss;
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long prev_utime = 0, prev_stime = 0, prev_maxrss = 0;
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int pid, status;
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printf("---- just started ----\n");
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/* check rusage 1st */
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rc = getrusage(RUSAGE_CHILDREN, &cur_rusage);
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CHKANDJUMP(rc == -1, "getrusage 1st");
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cur_maxrss = get_rusage_maxrss(&cur_rusage);
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delta_maxrss = cur_maxrss - prev_maxrss;
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printf("[ RUSAGE_CHILDREN ]\n");
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OKNG(cur_maxrss != 0,
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" maxrss: %d KB (+ %d KB)", cur_maxrss, delta_maxrss);
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prev_maxrss = cur_maxrss;
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printf("---- fork child process ----\n");
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pid = fork();
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CHKANDJUMP(pid == -1, "fork");
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if (pid == 0) { /* child */
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/* add utime 1sec */
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printf(" ---- add utime 1sec in child ----\n");
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add_utime(1);
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/* mmap 16MB */
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printf(" ---- mmap and access 16MB (%d KB) in child ----\n", 16 * 1024);
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buf = mmap(0, 16 * M_BYTE, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
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CHKANDJUMP(!buf, "mmap");
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memset(buf, 0xff, 16 * M_BYTE);
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/* munmap 16MB */
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printf(" ---- munmap 16MB (%d KB) in child ----\n", 16 * 1024);
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munmap(buf, 16 * M_BYTE);
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printf(" ---- child process exit ----\n");
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_exit(123);
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} else { /* parent */
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/* mmap 32MB */
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printf("---- mmap and access 32MB (%d KB) in parent ----\n", 32 * 1024);
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buf = mmap(0, 32 * M_BYTE, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
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CHKANDJUMP(!buf, "mmap");
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memset(buf, 0xff, 32 * M_BYTE);
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/* munmap 32MB */
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printf("---- munmap 32MB (%d KB) in parent ----\n", 32 * 1024);
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munmap(buf, 32 * M_BYTE);
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printf("---- wait child's exit ----\n");
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rc = waitpid(pid, &status, 0);
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CHKANDJUMP(rc == -1, "waitpid");
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}
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/* check rusage 2nd */
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rc = getrusage(RUSAGE_CHILDREN, &cur_rusage);
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CHKANDJUMP(rc == -1, "getrusage 2nd");
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cur_maxrss = get_rusage_maxrss(&cur_rusage);
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delta_maxrss = cur_maxrss - prev_maxrss;
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printf("[ RUSAGE_CHILDREN ]\n");
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OKNG(cur_maxrss < 16 * 1024 || cur_maxrss > 32 * 1024,
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" maxrss: %d KB (+ %d KB) <- 子プロセス終了後に更新 (プロセス生成時の5～6M + mmapでの16M)",
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cur_maxrss, delta_maxrss);
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prev_maxrss = cur_maxrss;
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printf("*** %s PASS\n\n", TEST_NAME);
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return 0;
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fn_fail:
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printf("*** %s FAILED\n\n", TEST_NAME);
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return -1;
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}
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