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comparison src/os/aix/vm/os_aix.cpp @ 14421:3068270ba476

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8026487: PPC64: Implement 'os::fork_and_exec' on AIX Reviewed-by: kvn, twisti
author simonis
date Wed, 16 Oct 2013 10:52:41 +0200
parents 666e6ce3976c
children b858620b0081
comparison
equal deleted inserted replaced
14420:abe03600372a 14421:3068270ba476
225 julong os::available_memory() { 225 julong os::available_memory() {
226 return Aix::available_memory(); 226 return Aix::available_memory();
227 } 227 }
228 228
229 julong os::Aix::available_memory() { 229 julong os::Aix::available_memory() {
230 Unimplemented(); 230 os::Aix::meminfo_t mi;
231 return 0; 231 if (os::Aix::get_meminfo(&mi)) {
232 return mi.real_free;
233 } else {
234 return 0xFFFFFFFFFFFFFFFFLL;
235 }
232 } 236 }
233 237
234 julong os::physical_memory() { 238 julong os::physical_memory() {
235 return Aix::physical_memory(); 239 return Aix::physical_memory();
236 } 240 }
5058 // Run the specified command in a separate process. Return its exit value, 5062 // Run the specified command in a separate process. Return its exit value,
5059 // or -1 on failure (e.g. can't fork a new process). 5063 // or -1 on failure (e.g. can't fork a new process).
5060 // Unlike system(), this function can be called from signal handler. It 5064 // Unlike system(), this function can be called from signal handler. It
5061 // doesn't block SIGINT et al. 5065 // doesn't block SIGINT et al.
5062 int os::fork_and_exec(char* cmd) { 5066 int os::fork_and_exec(char* cmd) {
5063 Unimplemented(); 5067 char * argv[4] = {"sh", "-c", cmd, NULL};
5064 return 0; 5068
5069 pid_t pid = fork();
5070
5071 if (pid < 0) {
5072 // fork failed
5073 return -1;
5074
5075 } else if (pid == 0) {
5076 // child process
5077
5078 // try to be consistent with system(), which uses "/usr/bin/sh" on AIX
5079 execve("/usr/bin/sh", argv, environ);
5080
5081 // execve failed
5082 _exit(-1);
5083
5084 } else {
5085 // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't
5086 // care about the actual exit code, for now.
5087
5088 int status;
5089
5090 // Wait for the child process to exit. This returns immediately if
5091 // the child has already exited. */
5092 while (waitpid(pid, &status, 0) < 0) {
5093 switch (errno) {
5094 case ECHILD: return 0;
5095 case EINTR: break;
5096 default: return -1;
5097 }
5098 }
5099
5100 if (WIFEXITED(status)) {
5101 // The child exited normally; get its exit code.
5102 return WEXITSTATUS(status);
5103 } else if (WIFSIGNALED(status)) {
5104 // The child exited because of a signal
5105 // The best value to return is 0x80 + signal number,
5106 // because that is what all Unix shells do, and because
5107 // it allows callers to distinguish between process exit and
5108 // process death by signal.
5109 return 0x80 + WTERMSIG(status);
5110 } else {
5111 // Unknown exit code; pass it through
5112 return status;
5113 }
5114 }
5115 // Remove warning.
5116 return -1;
5065 } 5117 }
5066 5118
5067 // is_headless_jre() 5119 // is_headless_jre()
5068 // 5120 //
5069 // Test for the existence of xawt/libmawt.so or libawt_xawt.so 5121 // Test for the existence of xawt/libmawt.so or libawt_xawt.so