homework-jianmu/source/os/src/osProc.c

81 lines
1.8 KiB
C

/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define ALLOW_FORBID_FUNC
#define _DEFAULT_SOURCE
#include "os.h"
int32_t taosNewProc(char **args) {
#ifdef WINDOWS
assert(0);
return 0;
#else
int32_t pid = fork();
if (pid == 0) {
args[0] = tsProcPath;
// close(STDIN_FILENO);
// close(STDOUT_FILENO);
// close(STDERR_FILENO);
return execvp(tsProcPath, args);
} else {
return pid;
}
#endif
}
void taosWaitProc(int32_t pid) {
#ifdef WINDOWS
assert(0);
#else
int32_t status = -1;
waitpid(pid, &status, 0);
#endif
}
void taosKillProc(int32_t pid) {
#ifdef WINDOWS
assert(0);
#else
kill(pid, SIGINT);
#endif
}
bool taosProcExist(int32_t pid) {
#ifdef WINDOWS
assert(0);
return false;
#else
int32_t p = getpgid(pid);
return p >= 0;
#endif
}
// the length of the new name must be less than the original name to take effect
void taosSetProcName(int32_t argc, char **argv, const char *name) {
setThreadName(name);
for (int32_t i = 0; i < argc; ++i) {
int32_t len = strlen(argv[i]);
for (int32_t j = 0; j < len; ++j) {
argv[i][j] = 0;
}
if (i == 0) {
tstrncpy(argv[0], name, len + 1);
}
}
}
void taosSetProcPath(int32_t argc, char **argv) { tsProcPath = argv[0]; }