1 files changed, 99 insertions, 0 deletions
diff --git a/src/core/lib/gpr/subprocess_posix.cc b/src/core/lib/gpr/subprocess_posix.cc
new file mode 100644
index 0000000000..dc046b6499
--- /dev/null
+++ b/src/core/lib/gpr/subprocess_posix.cc
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_SUBPROCESS
+
+#include <grpc/support/subprocess.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+struct gpr_subprocess {
+  int pid;
+  bool joined;
+};
+
+const char* gpr_subprocess_binary_extension() { return ""; }
+
+gpr_subprocess* gpr_subprocess_create(int argc, const char** argv) {
+  gpr_subprocess* r;
+  int pid;
+  char** exec_args;
+
+  pid = fork();
+  if (pid == -1) {
+    return nullptr;
+  } else if (pid == 0) {
+    exec_args = (char**)gpr_malloc(((size_t)argc + 1) * sizeof(char*));
+    memcpy(exec_args, argv, (size_t)argc * sizeof(char*));
+    exec_args[argc] = nullptr;
+    execv(exec_args[0], exec_args);
+    /* if we reach here, an error has occurred */
+    gpr_log(GPR_ERROR, "execv '%s' failed: %s", exec_args[0], strerror(errno));
+    _exit(1);
+    return nullptr;
+  } else {
+    r = (gpr_subprocess*)gpr_zalloc(sizeof(gpr_subprocess));
+    r->pid = pid;
+    return r;
+  }
+}
+
+void gpr_subprocess_destroy(gpr_subprocess* p) {
+  if (!p->joined) {
+    kill(p->pid, SIGKILL);
+    gpr_subprocess_join(p);
+  }
+  gpr_free(p);
+}
+
+int gpr_subprocess_join(gpr_subprocess* p) {
+  int status;
+retry:
+  if (waitpid(p->pid, &status, 0) == -1) {
+    if (errno == EINTR) {
+      goto retry;
+    }
+    gpr_log(GPR_ERROR, "waitpid failed for pid %d: %s", p->pid,
+            strerror(errno));
+    return -1;
+  }
+  p->joined = true;
+  return status;
+}
+
+void gpr_subprocess_interrupt(gpr_subprocess* p) {
+  if (!p->joined) {
+    kill(p->pid, SIGINT);
+  }
+}
+
+#endif /* GPR_POSIX_SUBPROCESS */