Port crash_cache tool to Linux.

Review URL: http://codereview.chromium.org/17353

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@7939 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 20 insertions, 0 deletions

diff --git a/base/process_util_posix.cc b/base/process_util_posix.cc
index dee917d..8e6781e 100644
--- a/base/process_util_posix.cc
+++ b/base/process_util_posix.cc
@@ -4,6 +4,7 @@
 
 #include "base/process_util.h"
 
+#include <errno.h>
 #include <signal.h>
 #include <sys/resource.h>
 #include <sys/time.h>
@@ -96,6 +97,25 @@ void RaiseProcessToHighPriority() {
   // setpriority() or sched_getscheduler, but these all require extra rights.
 }
 
+bool WaitForExitCode(ProcessHandle handle, int* exit_code) {
+  int status;
+  while (waitpid(handle, &status, 0) == -1) {
+    if (errno != EINTR) {
+      NOTREACHED();
+      return false;
+    }
+  }
+
+  if (WIFEXITED(status)) {
+    *exit_code = WEXITSTATUS(status);
+    return true;
+  }
+
+  // If it didn't exit cleanly, it must have been signaled.
+  DCHECK(WIFSIGNALED(status));
+  return false;
+}
+
 bool WaitForSingleProcess(ProcessHandle handle, int wait_milliseconds) {
   // This POSIX version of this function only guarantees that we wait no less
   // than |wait_milliseconds| for the proces to exit.  The child process may