[sanitizers] extracted process management functions

Differential Revision: http://reviews.llvm.org/D16542

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@258710 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/sanitizer_common/tests/sanitizer_linux_test.cc b/lib/sanitizer_common/tests/sanitizer_linux_test.cc
index eef71010a..773d77739 100644
--- a/lib/sanitizer_common/tests/sanitizer_linux_test.cc
+++ b/lib/sanitizer_common/tests/sanitizer_linux_test.cc
@@ -263,6 +263,29 @@ TEST(SanitizerLinux, ThreadSelfTest) {
 }
 #endif
 
+TEST(SanitizerCommon, StartSubprocessTest) {
+  int pipe_fds[2];
+  ASSERT_EQ(0, pipe(pipe_fds));
+  const char *argv[] = {"/bin/sh", "-c", "echo -n 'hello'"};
+  int pid = StartSubprocess("/bin/sh", const_cast<char **>(&argv[0]),
+                            kInvalidFd /* stdin */, pipe_fds[1] /* stdout */);
+  ASSERT_GT(pid, 0);
+
+  // wait for process to finish.
+  while (IsProcessRunning(pid)) {
+  }
+  ASSERT_FALSE(IsProcessRunning(pid));
+
+  char buffer[256];
+  char *ptr = buffer;
+  uptr bytes_read;
+  while (ReadFromFile(pipe_fds[0], ptr, 256, &bytes_read)) {
+    ptr += bytes_read;
+  }
+  ASSERT_EQ(0, memcmp(buffer, "hello", 5)) << "Buffer: " << buffer;
+  internal_close(pipe_fds[0]);
+}
+
 }  // namespace __sanitizer
 
 #endif  // SANITIZER_LINUX