doc: add code samples from uvbook (unadapted)

PR-URL: https://github.com/libuv/libuv/pull/1246
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/docs/code/proc-streams/main.c b/docs/code/proc-streams/main.c
new file mode 100644
index 00000000..b8a65212
--- /dev/null
+++ b/docs/code/proc-streams/main.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include <uv.h>
+
+uv_loop_t *loop;
+uv_process_t child_req;
+uv_process_options_t options;
+
+void on_exit(uv_process_t *req, int64_t exit_status, int term_signal) {
+    fprintf(stderr, "Process exited with status %" PRId64 ", signal %d\n", exit_status, term_signal);
+    uv_close((uv_handle_t*) req, NULL);
+}
+
+int main() {
+    loop = uv_default_loop();
+
+    size_t size = 500;
+    char path[size];
+    uv_exepath(path, &size);
+    strcpy(path + (strlen(path) - strlen("proc-streams")), "test");
+
+    char* args[2];
+    args[0] = path;
+    args[1] = NULL;
+
+    /* ... */
+
+    options.stdio_count = 3;
+    uv_stdio_container_t child_stdio[3];
+    child_stdio[0].flags = UV_IGNORE;
+    child_stdio[1].flags = UV_IGNORE;
+    child_stdio[2].flags = UV_INHERIT_FD;
+    child_stdio[2].data.fd = 2;
+    options.stdio = child_stdio;
+
+    options.exit_cb = on_exit;
+    options.file = args[0];
+    options.args = args;
+
+    int r;
+    if ((r = uv_spawn(loop, &child_req, &options))) {
+        fprintf(stderr, "%s\n", uv_strerror(r));
+        return 1;
+    }
+
+    return uv_run(loop, UV_RUN_DEFAULT);
+}