From 9f1b759e2fac0b15a7ef5a7a527ba66dbdc319b6 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Thu, 9 Jul 2009 00:32:30 +0000
Subject: Enable drawing progres bars in the background.

---
 tests/gl.c    |  7 ++++--
 tests/png.c   |  8 +++----
 tests/tests.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 tests/tests.h |  6 ++++-
 4 files changed, 90 insertions(+), 8 deletions(-)

(limited to 'tests')

diff --git a/tests/gl.c b/tests/gl.c
index e6daa3e..8b999af 100644
--- a/tests/gl.c
+++ b/tests/gl.c
@@ -24,10 +24,9 @@
 int
 main() {
   dmnsn_display *display;
-  dmnsn_progress *progress;
+  dmnsn_progress *progress, *barprogress;
   dmnsn_scene *scene;
   dmnsn_canvas *canvas;
-  unsigned int i;
 
   /* Set the resilience low for tests */
   dmnsn_set_resilience(DMNSN_SEVERITY_LOW);
@@ -64,6 +63,8 @@ main() {
     return EXIT_FAILURE;
   }
 
+  barprogress = dmnsn_progressbar_async("Raytracing scene: ", progress);
+
   /* Display the scene as it's rendered */
   while (dmnsn_get_progress(progress) < 1.0) {
     if (dmnsn_gl_write_canvas(scene->canvas) != 0) {
@@ -75,6 +76,8 @@ main() {
     dmnsn_display_flush(display);
   }
 
+  dmnsn_finish_progress(barprogress);
+
   if (dmnsn_finish_progress(progress) != 0) {
     dmnsn_delete_display(display);
     dmnsn_delete_default_scene(scene);
diff --git a/tests/png.c b/tests/png.c
index e5641f5..488cd56 100644
--- a/tests/png.c
+++ b/tests/png.c
@@ -56,7 +56,7 @@ main() {
       return EXIT_FAILURE;
     }
 
-    progressbar("Raytracing scene: ", progress);
+    dmnsn_progressbar("Raytracing scene: ", progress);
 
     if (dmnsn_finish_progress(progress) != 0) {
       dmnsn_delete_default_scene(scene);
@@ -81,7 +81,7 @@ main() {
       return EXIT_FAILURE;
     }
 
-    progressbar("Writing PNG file: ", progress);
+    dmnsn_progressbar("Writing PNG file: ", progress);
 
     if (dmnsn_finish_progress(progress) != 0) {
       fclose(ofile);
@@ -111,7 +111,7 @@ main() {
       return EXIT_FAILURE;
     }
 
-    progressbar("Reading PNG file: ", progress);
+    dmnsn_progressbar("Reading PNG file: ", progress);
 
     if (dmnsn_finish_progress(progress) != 0) {
       fclose(ifile);
@@ -138,7 +138,7 @@ main() {
       return EXIT_FAILURE;
     }
 
-    progressbar("Writing PNG file: ", progress);
+    dmnsn_progressbar("Writing PNG file: ", progress);
 
     if (dmnsn_finish_progress(progress) != 0) {
       fclose(ofile);
diff --git a/tests/tests.c b/tests/tests.c
index e91e290..cbf7ff8 100644
--- a/tests/tests.c
+++ b/tests/tests.c
@@ -229,11 +229,83 @@ dmnsn_display_flush(dmnsn_display *display)
 
 /* Print a progress bar of the progress of `progress' */
 void
-progressbar(const char *str, const dmnsn_progress *progress)
+dmnsn_progressbar(const char *str, const dmnsn_progress *progress)
+{
+  dmnsn_progress *barprogress = dmnsn_progressbar_async(str, progress);
+  if (dmnsn_finish_progress(barprogress) != 0) {
+    dmnsn_error(DMNSN_SEVERITY_HIGH,
+                "Progress bar background thread failed.");
+  }
+}
+
+typedef struct {
+  dmnsn_progress *barprogress;
+  const char *str;
+  const dmnsn_progress *progress;
+} dmnsn_progressbar_payload;
+
+/* Progress bar thread callback */
+static void *dmnsn_progressbar_thread(void *ptr);
+
+/* Print a progress bar in the background */
+dmnsn_progress *
+dmnsn_progressbar_async(const char *str, const dmnsn_progress *progress)
+{
+  dmnsn_progress *barprogress = dmnsn_new_progress();
+  dmnsn_progressbar_payload *payload;
+
+  if (barprogress) {
+    payload = malloc(sizeof(dmnsn_progressbar_payload));
+    if (!payload) {
+      dmnsn_error(DMNSN_SEVERITY_HIGH,
+                  "Couldn't allocate progress bar payload.");
+    }
+
+    payload->barprogress = barprogress;
+    payload->str = str;
+    payload->progress = progress;
+
+    /* Create the worker thread */
+    if (pthread_create(&barprogress->thread, NULL, &dmnsn_progressbar_thread,
+                       payload)
+        != 0) {
+      dmnsn_error(DMNSN_SEVERITY_HIGH,
+                  "Couldn't start progress bar background thread.");
+    }
+  }
+
+  return barprogress;
+}
+
+/* Actual progress bar implementation */
+static int dmnsn_progressbar_impl(dmnsn_progress *barprogress, const char *str,
+                                  const dmnsn_progress *progress);
+
+/* Progress bar thread callback */
+static void *
+dmnsn_progressbar_thread(void *ptr)
+{
+  dmnsn_progressbar_payload *payload = ptr;
+  int *retval = malloc(sizeof(int));
+  if (retval) {
+    *retval = dmnsn_progressbar_impl(payload->barprogress,
+                                     payload->str, payload->progress);
+  }
+  dmnsn_done_progress(payload->barprogress);
+  free(payload);
+  return retval;
+}
+
+/* Actual progress bar implementation */
+static int
+dmnsn_progressbar_impl(dmnsn_progress *barprogress,
+                       const char *str, const dmnsn_progress *progress)
 {
   const unsigned int increments = 32;
   unsigned int i;
 
+  dmnsn_new_progress_element(barprogress, increments);
+
   printf("%s|", str);
   fflush(stdout);
   for (i = 0; i < increments; ++i) {
@@ -241,7 +313,10 @@ progressbar(const char *str, const dmnsn_progress *progress)
 
     printf("=");
     fflush(stdout);
+    dmnsn_increment_progress(barprogress);
   }
   printf("|\n");
   fflush(stdout);
+
+  return 0;
 }
diff --git a/tests/tests.h b/tests/tests.h
index bedc215..19111c8 100644
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -61,7 +61,11 @@ void dmnsn_display_flush(dmnsn_display *display);
  */
 
 /* Print a progress bar of the progress of `progress' */
-void progressbar(const char *str, const dmnsn_progress *progress);
+void dmnsn_progressbar(const char *str, const dmnsn_progress *progress);
+/* Print a progress bar asynchronously, convienently guaranteed to succeed if
+   it returns so our tests don't get cluttered up */
+dmnsn_progress *dmnsn_progressbar_async(const char *str,
+                                        const dmnsn_progress *progress);
 
 #ifdef __cplusplus
 }
-- 
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