Reworking the build system

1 files changed, 0 insertions, 379 deletions

diff --git a/source/kit/threads.win32.c b/source/kit/threads.win32.c
deleted file mode 100644
index 72f0ba1..0000000
--- a/source/kit/threads.win32.c
+++ /dev/null
@@ -1,379 +0,0 @@
-#include "threads.h"
-
-#ifndef KIT_DISABLE_SYSTEM_THREADS
-#  include "allocator.h"
-
-#  if defined(_WIN32) && !defined(__CYGWIN__)
-#    include <assert.h>
-#    include <errno.h>
-#    include <limits.h>
-#    include <process.h>
-#    include <stdlib.h>
-
-#    ifndef WIN32_LEAN_AND_MEAN
-#      define WIN32_LEAN_AND_MEAN 1
-#    endif
-#    ifndef NOMINMAX
-#      define NOMINMAX
-#    endif
-#    include <windows.h>
-
-/*
-Configuration macro:
-
-  EMULATED_THREADS_USE_NATIVE_CALL_ONCE
-    Use native WindowsAPI one-time initialization function.
-    (requires WinVista or later)
-    Otherwise emulate by mtx_trylock() + *busy loop* for WinXP.
-
-  EMULATED_THREADS_TSS_DTOR_SLOTNUM
-    Max registerable TSS dtor number.
-*/
-
-#    if _WIN32_WINNT >= 0x0600
-/* Prefer native WindowsAPI on newer environment. */
-#      if !defined(__MINGW32__)
-#        define EMULATED_THREADS_USE_NATIVE_CALL_ONCE
-#      endif
-#    endif
-#    define EMULATED_THREADS_TSS_DTOR_SLOTNUM \
-      64 /* see TLS_MINIMUM_AVAILABLE */
-
-/* check configuration */
-#    if defined(EMULATED_THREADS_USE_NATIVE_CALL_ONCE) && \
-        (_WIN32_WINNT < 0x0600)
-#      error EMULATED_THREADS_USE_NATIVE_CALL_ONCE requires _WIN32_WINNT>=0x0600
-#    endif
-
-static_assert(sizeof(cnd_t) == sizeof(CONDITION_VARIABLE),
-              "The size of cnd_t must equal to CONDITION_VARIABLE");
-static_assert(sizeof(thrd_t) == sizeof(HANDLE),
-              "The size of thrd_t must equal to HANDLE");
-static_assert(sizeof(tss_t) == sizeof(DWORD),
-              "The size of tss_t must equal to DWORD");
-static_assert(sizeof(mtx_t) == sizeof(CRITICAL_SECTION),
-              "The size of mtx_t must equal to CRITICAL_SECTION");
-static_assert(sizeof(once_flag) == sizeof(INIT_ONCE),
-              "The size of once_flag must equal to INIT_ONCE");
-
-/*
-Implementation limits:
-  - Conditionally emulation for "Initialization functions"
-    (see EMULATED_THREADS_USE_NATIVE_CALL_ONCE macro)
-  - Emulated `mtx_timelock()' with mtx_trylock() + *busy loop*
-*/
-
-typedef struct {
-  thrd_start_t func;
-  void        *arg;
-  thrd_t       thrd;
-} impl_thrd_param_t;
-
-struct thrd_state {
-  thrd_t thrd;
-  int    handle_need_close;
-};
-
-static thread_local struct thrd_state impl_current_thread = { 0 };
-
-static unsigned __stdcall impl_thrd_routine(void *p) {
-  impl_thrd_param_t *pack_p = (impl_thrd_param_t *) p;
-  impl_thrd_param_t  pack;
-  int                code;
-  impl_current_thread.thrd              = pack_p->thrd;
-  impl_current_thread.handle_need_close = 0;
-  memcpy(&pack, pack_p, sizeof(impl_thrd_param_t));
-  kit_alloc_dispatch(NULL, KIT_DEALLOCATE, 0, 0, p);
-  code = pack.func(pack.arg);
-  return (unsigned) code;
-}
-
-static time_t impl_timespec2msec(const struct timespec *ts) {
-  return (ts->tv_sec * 1000U) + (ts->tv_nsec / 1000000L);
-}
-
-static DWORD impl_abs2relmsec(const struct timespec *abs_time) {
-  const time_t    abs_ms = impl_timespec2msec(abs_time);
-  struct timespec now;
-  timespec_get(&now, TIME_UTC);
-  const time_t now_ms = impl_timespec2msec(&now);
-  const DWORD  rel_ms = (abs_ms > now_ms) ? (DWORD) (abs_ms - now_ms)
-                                          : 0;
-  return rel_ms;
-}
-
-#    ifdef EMULATED_THREADS_USE_NATIVE_CALL_ONCE
-struct impl_call_once_param {
-  void (*func)(void);
-};
-
-static BOOL CALLBACK impl_call_once_callback(PINIT_ONCE InitOnce,
-                                             PVOID      Parameter,
-                                             PVOID     *Context) {
-  struct impl_call_once_param *param = (struct impl_call_once_param *)
-      Parameter;
-  (param->func)();
-  ((void) InitOnce);
-  ((void) Context); /* suppress warning */
-  return TRUE;
-}
-#    endif /* ifdef EMULATED_THREADS_USE_NATIVE_CALL_ONCE */
-
-static struct impl_tss_dtor_entry {
-  tss_t      key;
-  tss_dtor_t dtor;
-} impl_tss_dtor_tbl[EMULATED_THREADS_TSS_DTOR_SLOTNUM];
-
-static int impl_tss_dtor_register(tss_t key, tss_dtor_t dtor) {
-  int i;
-  for (i = 0; i < EMULATED_THREADS_TSS_DTOR_SLOTNUM; i++) {
-    if (!impl_tss_dtor_tbl[i].dtor)
-      break;
-  }
-  if (i == EMULATED_THREADS_TSS_DTOR_SLOTNUM)
-    return 1;
-  impl_tss_dtor_tbl[i].key  = key;
-  impl_tss_dtor_tbl[i].dtor = dtor;
-  return 0;
-}
-
-static void impl_tss_dtor_invoke(void) {
-  int i;
-  for (i = 0; i < EMULATED_THREADS_TSS_DTOR_SLOTNUM; i++) {
-    if (impl_tss_dtor_tbl[i].dtor) {
-      void *val = (void *) (size_t) TlsGetValue(
-          impl_tss_dtor_tbl[i].key);
-      if (val)
-        (impl_tss_dtor_tbl[i].dtor)(val);
-    }
-  }
-}
-
-void call_once(once_flag *flag, void (*func)(void)) {
-  assert(flag && func);
-#    ifdef EMULATED_THREADS_USE_NATIVE_CALL_ONCE
-  {
-    struct impl_call_once_param param;
-    param.func = func;
-    InitOnceExecuteOnce((PINIT_ONCE) flag, impl_call_once_callback,
-                        (PVOID) &param, NULL);
-  }
-#    else
-  if (InterlockedCompareExchangePointer(
-          (PVOID volatile *) &flag->status, (PVOID) 1, (PVOID) 0) ==
-      0) {
-    (func)();
-    InterlockedExchangePointer((PVOID volatile *) &flag->status,
-                               (PVOID) 2);
-  } else {
-    while (flag->status == 1) {
-      // busy loop!
-      thrd_yield();
-    }
-  }
-#    endif
-}
-
-int cnd_broadcast(cnd_t *cond) {
-  assert(cond != NULL);
-  WakeAllConditionVariable((PCONDITION_VARIABLE) cond);
-  return thrd_success;
-}
-
-void cnd_destroy(cnd_t *cond) {
-  assert(cond != NULL);
-  /* do nothing */
-  (void) cond;
-}
-
-int cnd_init(cnd_t *cond) {
-  assert(cond != NULL);
-  InitializeConditionVariable((PCONDITION_VARIABLE) cond);
-  return thrd_success;
-}
-
-int cnd_signal(cnd_t *cond) {
-  assert(cond != NULL);
-  WakeConditionVariable((PCONDITION_VARIABLE) cond);
-  return thrd_success;
-}
-
-int cnd_timedwait(cnd_t *cond, mtx_t *mtx,
-                  const struct timespec *abs_time) {
-  assert(cond != NULL);
-  assert(mtx != NULL);
-  assert(abs_time != NULL);
-  const DWORD timeout = impl_abs2relmsec(abs_time);
-  if (SleepConditionVariableCS((PCONDITION_VARIABLE) cond,
-                               (PCRITICAL_SECTION) mtx, timeout))
-    return thrd_success;
-  return (GetLastError() == ERROR_TIMEOUT) ? thrd_timedout
-                                           : thrd_error;
-}
-
-int cnd_wait(cnd_t *cond, mtx_t *mtx) {
-  assert(cond != NULL);
-  assert(mtx != NULL);
-  SleepConditionVariableCS((PCONDITION_VARIABLE) cond,
-                           (PCRITICAL_SECTION) mtx, INFINITE);
-  return thrd_success;
-}
-
-void mtx_destroy(mtx_t *mtx) {
-  assert(mtx);
-  DeleteCriticalSection((PCRITICAL_SECTION) mtx);
-}
-
-int mtx_init(mtx_t *mtx, int type) {
-  assert(mtx != NULL);
-  if (type != mtx_plain && type != mtx_timed &&
-      type != (mtx_plain | mtx_recursive) &&
-      type != (mtx_timed | mtx_recursive))
-    return thrd_error;
-  InitializeCriticalSection((PCRITICAL_SECTION) mtx);
-  return thrd_success;
-}
-
-int mtx_lock(mtx_t *mtx) {
-  assert(mtx != NULL);
-  EnterCriticalSection((PCRITICAL_SECTION) mtx);
-  return thrd_success;
-}
-
-int mtx_timedlock(mtx_t *mtx, const struct timespec *ts) {
-  assert(mtx != NULL);
-  assert(ts != NULL);
-  while (mtx_trylock(mtx) != thrd_success) {
-    if (impl_abs2relmsec(ts) == 0)
-      return thrd_timedout;
-    /* busy loop! */
-    thrd_yield();
-  }
-  return thrd_success;
-}
-
-int mtx_trylock(mtx_t *mtx) {
-  assert(mtx != NULL);
-  return TryEnterCriticalSection((PCRITICAL_SECTION) mtx)
-             ? thrd_success
-             : thrd_busy;
-}
-
-int mtx_unlock(mtx_t *mtx) {
-  assert(mtx != NULL);
-  LeaveCriticalSection((PCRITICAL_SECTION) mtx);
-  return thrd_success;
-}
-
-int thrd_create_with_stack(thrd_t *thr, thrd_start_t func, void *arg,
-                           ptrdiff_t const stack_size) {
-  impl_thrd_param_t *pack;
-  uintptr_t          handle;
-  assert(thr != NULL);
-  assert(stack_size >= 0 && stack_size < 0x100000000);
-
-  pack = (impl_thrd_param_t *) kit_alloc_dispatch(
-      NULL, KIT_ALLOCATE, (sizeof(impl_thrd_param_t)), 0, NULL);
-  if (!pack)
-    return thrd_nomem;
-  pack->func = func;
-  pack->arg  = arg;
-  handle     = _beginthreadex(NULL, (unsigned) stack_size,
-                              impl_thrd_routine, pack, CREATE_SUSPENDED,
-                              NULL);
-  if (handle == 0) {
-    kit_alloc_dispatch(NULL, KIT_DEALLOCATE, 0, 0, pack);
-    if (errno == EAGAIN || errno == EACCES)
-      return thrd_nomem;
-    return thrd_error;
-  }
-  thr->handle = (void *) handle;
-  pack->thrd  = *thr;
-  ResumeThread((HANDLE) handle);
-  return thrd_success;
-}
-
-int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) {
-  return thrd_create_with_stack(thr, func, arg, 0);
-}
-
-thrd_t thrd_current(void) {
-  /* GetCurrentThread() returns a pseudo-handle, which we need
-   * to pass to DuplicateHandle(). Only the resulting handle can be
-   * used from other threads.
-   *
-   * Note that neither handle can be compared to the one by
-   * thread_create. Only the thread IDs - as returned by GetThreadId()
-   * and GetCurrentThreadId() can be compared directly.
-   *
-   * Other potential solutions would be:
-   * - define thrd_t as a thread Ids, but this would mean we'd need to
-   * OpenThread for many operations
-   * - use malloc'ed memory for thrd_t. This would imply using TLS for
-   * current thread.
-   *
-   * Neither is particularly nice.
-   *
-   * Life would be much easier if C11 threads had different
-   * abstractions for threads and thread IDs, just like C++11 threads
-   * does...
-   */
-  struct thrd_state *state = &impl_current_thread;
-  if (state->thrd.handle == NULL) {
-    if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
-                         GetCurrentProcess(), &(state->thrd.handle),
-                         0, FALSE, DUPLICATE_SAME_ACCESS)) {
-      abort();
-    }
-    state->handle_need_close = 1;
-  }
-  return state->thrd;
-}
-
-int thrd_detach(thrd_t thr) {
-  CloseHandle(thr.handle);
-  return thrd_success;
-}
-
-int thrd_equal(thrd_t thr0, thrd_t thr1) {
-  return GetThreadId(thr0.handle) == GetThreadId(thr1.handle);
-}
-
-_Noreturn void thrd_exit(int res) {
-  _endthreadex((unsigned) res);
-}
-
-int thrd_join(thrd_t thr, int *res) {
-  DWORD w, code;
-  if (thr.handle == NULL) {
-    return thrd_error;
-  }
-  w = WaitForSingleObject(thr.handle, INFINITE);
-  if (w != WAIT_OBJECT_0)
-    return thrd_error;
-  if (res) {
-    if (!GetExitCodeThread(thr.handle, &code)) {
-      CloseHandle(thr.handle);
-      return thrd_error;
-    }
-    *res = (int) code;
-  }
-  CloseHandle(thr.handle);
-  return thrd_success;
-}
-
-int thrd_sleep(const struct timespec *time_point,
-               struct timespec       *remaining) {
-  (void) remaining;
-  assert(time_point);
-  assert(!remaining); /* not implemented */
-  Sleep((DWORD) impl_timespec2msec(time_point));
-  return 0;
-}
-
-void thrd_yield(void) {
-  SwitchToThread();
-}
-
-#  endif
-#endif