Added imgui for configuration

1 files changed, 246 insertions, 0 deletions

diff --git a/vendor/zgui/libs/winpthreads/src/barrier.c b/vendor/zgui/libs/winpthreads/src/barrier.c
new file mode 100644
index 0000000..e973aaa
--- /dev/null
+++ b/vendor/zgui/libs/winpthreads/src/barrier.c
@@ -0,0 +1,246 @@
+/*
+   Copyright (c) 2011-2016  mingw-w64 project
+
+   Permission is hereby granted, free of charge, to any person obtaining a
+   copy of this software and associated documentation files (the "Software"),
+   to deal in the Software without restriction, including without limitation
+   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+   and/or sell copies of the Software, and to permit persons to whom the
+   Software is furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+   DEALINGS IN THE SOFTWARE.
+*/
+
+#include <windows.h>
+#include <stdio.h>
+#include <malloc.h>
+#include "pthread.h"
+#include "barrier.h"
+#include "ref.h" 
+#include "misc.h"
+
+static pthread_spinlock_t barrier_global = PTHREAD_SPINLOCK_INITIALIZER;
+
+static WINPTHREADS_ATTRIBUTE((noinline)) int
+barrier_unref(volatile pthread_barrier_t *barrier, int res)
+{
+    pthread_spin_lock(&barrier_global);
+#ifdef WINPTHREAD_DBG
+    assert((((barrier_t *)*barrier)->valid == LIFE_BARRIER) && (((barrier_t *)*barrier)->busy > 0));
+#endif
+     ((barrier_t *)*barrier)->busy -= 1;
+    pthread_spin_unlock(&barrier_global);
+    return res;
+}
+
+static WINPTHREADS_ATTRIBUTE((noinline)) int barrier_ref(volatile pthread_barrier_t *barrier)
+{
+    int r = 0;
+    pthread_spin_lock(&barrier_global);
+
+    if (!barrier || !*barrier || ((barrier_t *)*barrier)->valid != LIFE_BARRIER) r = EINVAL;
+    else {
+        ((barrier_t *)*barrier)->busy += 1;
+    }
+
+    pthread_spin_unlock(&barrier_global);
+
+    return r;
+}
+
+static WINPTHREADS_ATTRIBUTE((noinline))  int
+barrier_ref_destroy(volatile pthread_barrier_t *barrier, pthread_barrier_t *bDestroy)
+{
+    int r = 0;
+
+    *bDestroy = NULL;
+    pthread_spin_lock(&barrier_global);
+    
+    if (!barrier || !*barrier || ((barrier_t *)*barrier)->valid != LIFE_BARRIER) r = EINVAL;
+    else {
+        barrier_t *b_ = (barrier_t *)*barrier;
+        if (b_->busy) r = EBUSY;
+        else {
+            *bDestroy = *barrier;
+            *barrier = NULL;
+        }
+    }
+
+    pthread_spin_unlock(&barrier_global);
+    return r;
+}
+
+static WINPTHREADS_ATTRIBUTE((noinline)) void
+barrier_ref_set (volatile pthread_barrier_t *barrier, void *v)
+{
+  pthread_spin_lock(&barrier_global);
+  *barrier = v;
+  pthread_spin_unlock(&barrier_global);
+}
+
+int pthread_barrier_destroy(pthread_barrier_t *b_)
+{
+    pthread_barrier_t bDestroy;
+    barrier_t *b;
+    int r;
+    
+    while ((r = barrier_ref_destroy(b_,&bDestroy)) == EBUSY)
+      Sleep(0);
+    
+    if (r)
+      return r;
+
+    b = (barrier_t *)bDestroy;
+    
+    pthread_mutex_lock(&b->m);
+
+    if (sem_destroy(&b->sems[0]) != 0)
+    {
+        /* Could this happen? */
+        *b_ = bDestroy;
+        pthread_mutex_unlock (&b->m);
+        return EBUSY;
+    }
+    if (sem_destroy(&b->sems[1]) != 0)
+    {
+      sem_init (&b->sems[0], b->share, 0);
+      *b_ = bDestroy;
+      pthread_mutex_unlock (&b->m);
+      return -1;
+    }
+    pthread_mutex_unlock(&b->m);
+    if(pthread_mutex_destroy(&b->m) != 0) {
+     sem_init (&b->sems[0], b->share, 0);
+     sem_init (&b->sems[1], b->share, 0);
+     *b_ = bDestroy;
+     return -1;
+    }
+    b->valid = DEAD_BARRIER;
+    free(bDestroy);
+    return 0;
+
+}
+
+int
+pthread_barrier_init (pthread_barrier_t *b_, const void *attr,
+		      unsigned int count)
+{
+    barrier_t *b;
+
+    if (!count || !b_)
+      return EINVAL;
+
+    if ((b = (pthread_barrier_t)calloc(1,sizeof(*b))) == NULL)
+       return ENOMEM;
+    if (!attr || *((int **)attr) == NULL)
+      b->share = PTHREAD_PROCESS_PRIVATE;
+    else
+      memcpy (&b->share, *((void **) attr), sizeof (int));
+    b->total = count;
+    b->count = count;
+    b->valid = LIFE_BARRIER;
+    b->sel = 0;
+
+    if (pthread_mutex_init(&b->m, NULL) != 0)
+    {
+      free (b);
+      return ENOMEM;
+    }
+
+    if (sem_init(&b->sems[0], b->share, 0) != 0)
+    {
+       pthread_mutex_destroy(&b->m);
+       free (b);
+       return ENOMEM;
+    }
+    if (sem_init(&b->sems[1], b->share, 0) != 0)
+    {
+       pthread_mutex_destroy(&b->m);
+       sem_destroy(&b->sems[0]);
+       free (b);
+       return ENOMEM;
+    }
+    barrier_ref_set (b_,b);
+
+    return 0;
+}
+
+int pthread_barrier_wait(pthread_barrier_t *b_)
+{
+  long sel;
+  int r, e, rslt;
+  barrier_t *b;
+
+  r = barrier_ref(b_);
+  if(r) return r;
+
+  b = (barrier_t *)*b_;
+
+  if ((r = pthread_mutex_lock(&b->m)) != 0) return  barrier_unref(b_,EINVAL);
+  sel = b->sel;
+  InterlockedDecrement((long*)&b->total);
+  if (b->total == 0)
+  {
+    b->total = b->count;
+    b->sel = (sel != 0 ? 0 : 1);
+    e = 1;
+    rslt = PTHREAD_BARRIER_SERIAL_THREAD;
+    r = (b->count > 1 ? sem_post_multiple (&b->sems[sel], b->count - 1) : 0);
+  }
+  else { e = 0; rslt= 0; }
+  pthread_mutex_unlock(&b->m);
+  if (!e)
+    r = sem_wait(&b->sems[sel]);
+
+  if (!r) r = rslt;
+  return barrier_unref(b_,r);
+}
+
+int pthread_barrierattr_init(void **attr)
+{
+  int *p;
+
+  if ((p = (int *) calloc (1, sizeof (int))) == NULL)
+    return ENOMEM;
+
+  *p = PTHREAD_PROCESS_PRIVATE;
+  *attr = p;
+
+  return 0;
+}
+
+int pthread_barrierattr_destroy(void **attr)
+{
+  void *p;
+  if (!attr || (p = *attr) == NULL)
+    return EINVAL;
+  *attr = NULL;
+  free (p);
+  return 0;
+}
+
+int pthread_barrierattr_setpshared(void **attr, int s)
+{
+  if (!attr || *attr == NULL
+      || (s != PTHREAD_PROCESS_SHARED && s != PTHREAD_PROCESS_PRIVATE))
+    return EINVAL;
+  memcpy (*attr, &s, sizeof (int));
+  return 0;
+}
+
+int pthread_barrierattr_getpshared(void **attr, int *s)
+{
+  if (!attr || !s || *attr == NULL)
+    return EINVAL;
+  memcpy (s, *attr, sizeof (int));
+  return 0;
+}