Added imgui for configuration

1 files changed, 197 insertions, 0 deletions

diff --git a/vendor/zgui/libs/winpthreads/src/misc.c b/vendor/zgui/libs/winpthreads/src/misc.c
new file mode 100644
index 0000000..457bc86
--- /dev/null
+++ b/vendor/zgui/libs/winpthreads/src/misc.c
@@ -0,0 +1,197 @@
+/*
+   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 "pthread.h"
+#include "misc.h"
+
+void (WINAPI *_pthread_get_system_time_best_as_file_time) (LPFILETIME) = NULL;
+static ULONGLONG (WINAPI *_pthread_get_tick_count_64) (VOID);
+
+#if defined(__GNUC__) || defined(__clang__)
+__attribute__((constructor))
+#endif
+static void winpthreads_init(void)
+{
+    HMODULE mod = GetModuleHandleA("kernel32.dll");
+    if (mod)
+    {
+        _pthread_get_tick_count_64 =
+            (ULONGLONG (WINAPI *)(VOID))(void*) GetProcAddress(mod, "GetTickCount64");
+
+        /* <1us precision on Windows 10 */
+        _pthread_get_system_time_best_as_file_time =
+            (void (WINAPI *)(LPFILETIME))(void*) GetProcAddress(mod, "GetSystemTimePreciseAsFileTime");
+    }
+
+    if (!_pthread_get_system_time_best_as_file_time)
+        /* >15ms precision on Windows 10 */
+        _pthread_get_system_time_best_as_file_time = GetSystemTimeAsFileTime;
+}
+
+#if defined(_MSC_VER) && !defined(__clang__)
+/* Force a reference to __xc_t to prevent whole program optimization
+ * from discarding the variable. */
+
+/* On x86, symbols are prefixed with an underscore. */
+# if defined(_M_IX86)
+#   pragma comment(linker, "/include:___xc_t")
+# else
+#   pragma comment(linker, "/include:__xc_t")
+# endif
+
+#pragma section(".CRT$XCT", long, read)
+__declspec(allocate(".CRT$XCT"))
+extern const _PVFV __xc_t;
+const _PVFV __xc_t = winpthreads_init;
+#endif
+
+unsigned long long _pthread_time_in_ms(void)
+{
+    FILETIME ft;
+
+    GetSystemTimeAsFileTime(&ft);
+    return (((unsigned long long)ft.dwHighDateTime << 32) + ft.dwLowDateTime
+            - 0x19DB1DED53E8000ULL) / 10000ULL;
+}
+
+unsigned long long _pthread_time_in_ms_from_timespec(const struct timespec *ts)
+{
+    unsigned long long t = (unsigned long long) ts->tv_sec * 1000LL;
+    /* The +999999 is here to ensure that the division always rounds up */
+    t += (unsigned long long) (ts->tv_nsec + 999999) / 1000000;
+
+    return t;
+}
+
+unsigned long long _pthread_rel_time_in_ms(const struct timespec *ts)
+{
+    unsigned long long t1 = _pthread_time_in_ms_from_timespec(ts);
+    unsigned long long t2 = _pthread_time_in_ms();
+
+    /* Prevent underflow */
+    if (t1 < t2) return 0;
+    return t1 - t2;
+}
+
+static unsigned long long
+_pthread_get_tick_count (long long *frequency)
+{
+  if (_pthread_get_tick_count_64 != NULL)
+    return _pthread_get_tick_count_64 ();
+
+  LARGE_INTEGER freq, timestamp;
+
+  if (*frequency == 0)
+  {
+    if (QueryPerformanceFrequency (&freq))
+      *frequency = freq.QuadPart;
+    else
+      *frequency = -1;
+  }
+
+  if (*frequency > 0 && QueryPerformanceCounter (&timestamp))
+    return timestamp.QuadPart / (*frequency / 1000);
+
+  /* Fallback */
+  return GetTickCount ();
+}
+
+/* A wrapper around WaitForSingleObject() that ensures that
+ * the wait function does not time out before the time
+ * actually runs out. This is needed because WaitForSingleObject()
+ * might have poor accuracy, returning earlier than expected.
+ * On the other hand, returning a bit *later* than expected
+ * is acceptable in a preemptive multitasking environment.
+ */
+unsigned long
+_pthread_wait_for_single_object (void *handle, unsigned long timeout)
+{
+  DWORD result;
+  unsigned long long start_time, end_time;
+  unsigned long wait_time;
+  long long frequency = 0;
+
+  if (timeout == INFINITE || timeout == 0)
+    return WaitForSingleObject ((HANDLE) handle, (DWORD) timeout);
+
+  start_time = _pthread_get_tick_count (&frequency);
+  end_time = start_time + timeout;
+  wait_time = timeout;
+
+  do
+  {
+    unsigned long long current_time;
+
+    result = WaitForSingleObject ((HANDLE) handle, (DWORD) wait_time);
+    if (result != WAIT_TIMEOUT)
+      break;
+
+    current_time = _pthread_get_tick_count (&frequency);
+    if (current_time >= end_time)
+      break;
+
+    wait_time = (DWORD) (end_time - current_time);
+  } while (TRUE);
+
+  return result;
+}
+
+/* A wrapper around WaitForMultipleObjects() that ensures that
+ * the wait function does not time out before the time
+ * actually runs out. This is needed because WaitForMultipleObjects()
+ * might have poor accuracy, returning earlier than expected.
+ * On the other hand, returning a bit *later* than expected
+ * is acceptable in a preemptive multitasking environment.
+ */
+unsigned long
+_pthread_wait_for_multiple_objects (unsigned long count, void **handles, unsigned int all, unsigned long timeout)
+{
+  DWORD result;
+  unsigned long long start_time, end_time;
+  unsigned long wait_time;
+  long long frequency = 0;
+
+  if (timeout == INFINITE || timeout == 0)
+    return WaitForMultipleObjects ((DWORD) count, (HANDLE *) handles, all, (DWORD) timeout);
+
+  start_time = _pthread_get_tick_count (&frequency);
+  end_time = start_time + timeout;
+  wait_time = timeout;
+
+  do
+  {
+    unsigned long long current_time;
+
+    result = WaitForMultipleObjects ((DWORD) count, (HANDLE *) handles, all, (DWORD) wait_time);
+    if (result != WAIT_TIMEOUT)
+      break;
+
+    current_time = _pthread_get_tick_count (&frequency);
+    if (current_time >= end_time)
+      break;
+
+    wait_time = (DWORD) (end_time - current_time);
+  } while (TRUE);
+
+  return result;
+}