vinllen
6 years ago
commit
62d2f9890b
8 changed files with 323 additions and 3 deletions
@ -0,0 +1,260 @@ |
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/*
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* Compilation: |
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* gcc -Wall -O3 hypervisor.c -o hypervisor |
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* |
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* */ |
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#include <stdio.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#ifdef __linux__ |
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#include <wait.h> |
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#else |
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#include <sys/wait.h> |
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#endif |
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#include <errno.h> |
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#include <time.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <fcntl.h> |
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#include <getopt.h> |
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#define MAXOPT 256 |
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#define INTERVAL 5 |
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#define MAXINTERVAL 180 |
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#define USAGE() do{ \ |
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fprintf(stderr, "Usage : %s [--daemon] --exec=\"command arg1 arg2 arg3 ...\"\n", argv[0]); \
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}while(0) |
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static char *cmd, *cmdopt[MAXOPT + 1]; |
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static int daemonize; |
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static int parseopt(int argc, char *argv[]); |
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static int set_nonblock(int fd); |
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static int getstatus(char *buf, int size, int status); |
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static int parseopt(int argc, char *argv[]) |
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{ |
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int ch, i; |
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char *token, *tmpptr, *cmdstr; |
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cmdstr = cmd = NULL; |
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daemonize = 0; |
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for(i = 0; i < MAXOPT + 1; i++){ |
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cmdopt[i] = NULL; |
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} |
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struct option long_options[] = { |
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{"daemon",optional_argument,NULL,'d'}, |
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{"exec",required_argument,NULL,'e'}, |
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{0,0,0,0}, |
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}; |
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while((ch=getopt_long(argc, argv, "dec:", long_options, NULL)) != -1) { |
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switch(ch) |
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{ |
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case 'e': |
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if((cmdstr = strdup(optarg)) == NULL ) |
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return -1; |
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break; |
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case 'd': |
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daemonize = 1; |
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break; |
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default: |
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USAGE(); |
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return -1; |
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} |
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} |
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if(cmdstr == NULL){ |
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USAGE(); |
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return -1; |
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} |
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for(i = 0;i < MAXOPT + 1;cmdstr = NULL, i++){ |
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token = strtok_r(cmdstr, " \t\n", &tmpptr); |
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if(token == NULL){ |
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break; |
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} else { |
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cmdopt[i] = strdup(token); |
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if(i == 0){ |
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cmd = strdup(token); |
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} |
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} |
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} |
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if( (cmd == NULL) || (strlen(cmd) == 0) ){ |
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fprintf(stderr, "Error, cmd should not be empty.\n"); |
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return -1; |
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} |
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if(i == MAXOPT + 1){ |
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fprintf(stderr, "Argument too long\n"); |
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return -1; |
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} |
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cmdopt[i] = NULL; |
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return 0; |
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} |
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static int set_nonblock(int fd) |
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{ |
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int flags = fcntl(fd, F_GETFL, 0); |
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if (flags == -1) { |
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return -1; |
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} |
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return fcntl(fd, F_SETFL, flags | O_NONBLOCK); |
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} |
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static int getstatus(char *buf, int size, int status) |
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{ |
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int n, len; |
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len = size; |
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if(WIFEXITED(status)){ |
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n = snprintf(buf, len, "- normal termination, exit status = %d\n", WEXITSTATUS(status)); |
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} else if(WIFSIGNALED(status)) { |
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n = snprintf(buf, len, "- abnormal termination, signal number = %d%s",
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WTERMSIG(status),
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#ifdef WCOREDUMP |
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WCOREDUMP(status) ? "-> core file generated" : ""); |
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#else |
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""); |
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#endif |
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} else if(WIFSTOPPED(status)) { |
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n = snprintf(buf, len, "child stopped, signal number = %d\n", WSTOPSIG(status)); |
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} |
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return n; |
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} |
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void go_daemon() { |
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int fd; |
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if (fork() != 0) exit(0); /* parent exits */ |
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setsid(); /* create a new session */ |
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/* Every output goes to /dev/null. If Redis is daemonized but
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* * the 'logfile' is set to 'stdout' in the configuration file |
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* * it will not log at all. */ |
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if ((fd = open("/tmp/mongo4bls.output", O_RDWR, 0)) != -1) { |
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dup2(fd, STDIN_FILENO); |
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dup2(fd, STDOUT_FILENO); |
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dup2(fd, STDERR_FILENO);
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if (fd > STDERR_FILENO) close(fd); |
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}
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} |
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int main(int argc, char *argv[]) |
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{ |
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int ssec = INTERVAL, ret, status; |
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int first_start = 1; |
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int pipefd[2], waited, alive, isdaemon; |
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char buf[1024], info[4096]; |
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pid_t pid; |
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time_t now, last = time(NULL); |
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if((ret = parseopt(argc, argv)) < 0 ) |
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exit(ret); |
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daemonize ? go_daemon() : 0; |
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while(1){ |
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if(pipe(pipefd) < 0){ |
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fprintf(stderr, "- make pipe error : %s\n", strerror(errno)); |
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exit(-1); |
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} |
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if( (ret = set_nonblock(pipefd[0])) < 0 ){ |
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fprintf(stderr, "- set read nonblock error : %s\n", strerror(errno)); |
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exit(-1); |
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} |
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if((pid = fork()) < 0){ |
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fprintf(stderr, "- call fork() error : %s\n", strerror(errno)); |
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exit(-1); |
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} else if (pid > 0){ |
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close(pipefd[1]); |
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alive = waited = 1; |
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isdaemon = 0; |
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while(alive){ |
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if(waited){ |
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if(pid != waitpid(pid, &status, 0)){ |
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sleep(INTERVAL); |
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continue; |
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} else { |
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fprintf(stderr, "- child process[%d] terminated .\n",pid); |
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if (first_start && (time(NULL)-last)<=5) { |
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fprintf(stderr,"- child process killed in %ld seconds , may wrong ! exit !\n",(time(NULL)-last)); |
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exit(-1); |
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} else |
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first_start = 0; |
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waited = 0; |
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} |
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} |
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ret = read(pipefd[0], buf, sizeof(buf)); |
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if(ret < 0){ |
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if(errno == EAGAIN){ |
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if(isdaemon == 0){ |
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fprintf(stderr, "- this daemon process has no output !.\n"); |
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isdaemon = 1; |
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} |
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sleep(INTERVAL); |
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continue; |
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} else { |
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fprintf(stderr, "- read pipe error : %s\n", strerror(errno)); |
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exit(-1); |
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} |
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} else if(ret == 0) { |
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alive = 0; |
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close(pipefd[0]); |
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fprintf(stderr, "- read zero from pipe of children.\n"); |
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if(isdaemon == 0){ |
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getstatus(info, sizeof(info), status); |
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fprintf(stderr, "- extra info: %s\n", info); |
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} else { |
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strcpy(info, ""); |
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} |
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continue; |
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} else { |
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fprintf(stderr, " - read pipe return: %d bytes\n", ret); |
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exit(-1); |
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} |
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} |
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fprintf(stderr, "- process: \"%s\" exit, restart it\n", cmd); |
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sleep(ssec); |
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now = time(NULL); |
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if(now - last > 3600){ |
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ssec = INTERVAL; |
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last = now; |
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} else { |
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ssec = (ssec << 1) < MAXINTERVAL ? (ssec << 1) : MAXINTERVAL; |
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} |
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} else { |
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close(pipefd[0]); |
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fprintf(stderr, "- execute: \"%s\"\n", cmd); |
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if(execvp(cmd, cmdopt) < 0){ |
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fprintf(stderr, "- execute: \"%s\" error, %s\n", cmd, strerror(errno)); |
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exit(-1); |
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} |
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} |
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} |
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return 0; |
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} |
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@ -0,0 +1,19 @@ |
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#!/usr/bin/env bash |
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catalog=$(dirname "$0") |
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cd "${catalog}" || exit 1 |
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if [ $# != 2 ] ; then |
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echo "USAGE: $0 [conf] [mode]" |
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exit 0 |
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fi |
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name="redis-shake" |
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if [ "Darwin" == "$(uname -s)" ];then |
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printf "\\nWARNING !!! MacOs doesn't supply to use this script, please use \"./%s -conf=config_file_name\" manual command to run\\n" "$name" |
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exit 1 |
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fi |
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./hypervisor --daemon --exec="./$name -conf=$1 -type=$2 1>>$name.output 2>&1" 1>>hypervisor.output 2>&1 |
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@ -0,0 +1,13 @@ |
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#!/usr/bin/env bash |
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#kill -9 "$(cat "$1")" |
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if [ $# != 1 ] ; then |
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echo "USAGE: $0 [pid filename which by default is 'redis-shake.pid']" |
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exit 0 |
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fi |
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ppid=$(ps -ef | awk '{if ($2=='`cat $1`') print $3}') |
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[ -z $ppid ] && echo "[Fail] No process number for $(cat "$1")." && exit 1 |
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if [ $ppid -eq 1 ];then |
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kill -9 "$(cat "$1")" |
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else |
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kill -9 "$ppid" "$(cat "$1")" |
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fi |
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