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authorRafael G. Martins <rafael@rafaelmartins.eng.br>2017-03-04 19:00:26 +0100
committerRafael G. Martins <rafael@rafaelmartins.eng.br>2017-03-04 19:00:26 +0100
commit2c69eb0aec46e2332fb985f5acf961d2dc0edcd6 (patch)
tree141514e6efc8ad148e098be48d3fd40b8761ff71 /src/blogc-make/reloader.c
parent9ba9a5919f6f87700d14a9125359b2bca0d86f58 (diff)
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make: splitted reloader
Diffstat (limited to 'src/blogc-make/reloader.c')
-rw-r--r--src/blogc-make/reloader.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/blogc-make/reloader.c b/src/blogc-make/reloader.c
new file mode 100644
index 0000000..1b55253
--- /dev/null
+++ b/src/blogc-make/reloader.c
@@ -0,0 +1,93 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2017 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
+#include "../common/error.h"
+#include "ctx.h"
+#include "rules.h"
+#include "reloader.h"
+
+// we are not going to unit-test these functions, then printing errors
+// directly is not a big issue
+
+
+static void*
+bm_reloader_thread(void *arg)
+{
+ bm_reloader_t *reloader = arg;
+ while (reloader->running) {
+ if (!bm_ctx_reload(reloader->ctx)) {
+ fprintf(stderr, "blogc-make: error: failed to reload context. "
+ "reloader disabled!\n");
+ break;
+ }
+ if (0 != reloader->rule_exec(reloader->ctx, NULL, NULL)) {
+ fprintf(stderr, "blogc-make: error: failed to rebuild website. "
+ "reloader disabled!\n");
+ break;
+ }
+ sleep(1);
+ }
+
+ free(reloader);
+ return NULL;
+}
+
+
+bm_reloader_t*
+bm_reloader_new(bm_ctx_t *ctx, bm_rule_exec_func_t rule_exec)
+{
+ // first rule_exec call is syncronous, to do a 'sanity check'
+ if (0 != rule_exec(ctx, NULL, NULL))
+ return NULL;
+
+ int err;
+
+ pthread_attr_t attr;
+ if (0 != (err = pthread_attr_init(&attr))) {
+ fprintf(stderr, "blogc-make: error: failed to initialize reloader "
+ "thread attributes: %s\n", strerror(err));
+ return NULL;
+ }
+
+ // we run the thread detached, because we don't want to wait it to join
+ // before exiting. the OS can clean it properly
+ if (0 != (err = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED))) {
+ fprintf(stderr, "blogc-make: error: failed to mark reloader thread as "
+ "detached: %s\n", strerror(err));
+ return NULL;
+ }
+
+ bm_reloader_t *rv = bc_malloc(sizeof(bm_reloader_t));
+ rv->ctx = ctx;
+ rv->rule_exec = rule_exec;
+ rv->running = true;
+
+ pthread_t thread;
+ if (0 != (err = pthread_create(&thread, &attr, bm_reloader_thread, rv))) {
+ fprintf(stderr, "blogc-make: error: failed to create reloader "
+ "thread: %s\n", strerror(err));
+ free(rv);
+ return NULL;
+ }
+
+ return rv;
+}
+
+
+void
+bm_reloader_stop(bm_reloader_t *reloader)
+{
+ if (reloader == NULL)
+ return;
+ reloader->running = false;
+}