71 lines
1.2 KiB
C++
71 lines
1.2 KiB
C++
#include <cstdio>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "Util.h"
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#define SCRIPT_PATH "../../../check_apm.sh"
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int write_file(const char *path, const char *fmt, ...)
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{
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errno = 0;
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int fd = ::open(path, O_WRONLY | O_CLOEXEC);
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if (fd == -1) {
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return -errno;
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}
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va_list args;
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va_start(args, fmt);
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int ret = ::vdprintf(fd, fmt, args);
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int errno_bkp = errno;
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::close(fd);
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va_end(args);
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if (ret < 1) {
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return -errno_bkp;
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}
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return ret;
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}
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int read_file(const char *path, const char *fmt, ...)
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{
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errno = 0;
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FILE *file = ::fopen(path, "re");
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if (!file)
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return -errno;
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va_list args;
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va_start(args, fmt);
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int ret = ::vfscanf(file, fmt, args);
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int errno_bkp = errno;
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::fclose(file);
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va_end(args);
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if (ret < 1)
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return -errno_bkp;
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return ret;
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}
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bool check_apm()
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{
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int ret = system("ps -AT | grep -c sched-timer > /dev/null");
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if (WEXITSTATUS(ret) <= 0) {
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fprintf(stderr, "APM is running. Can't launch the example\n");
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return true;
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}
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return false;
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}
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