add plibsys

1 files changed, 458 insertions, 0 deletions

diff --git a/3rdparty/plibsys/src/puthread-os2.c b/3rdparty/plibsys/src/puthread-os2.c
new file mode 100644
index 0000000..8bb3731
--- /dev/null
+++ b/3rdparty/plibsys/src/puthread-os2.c
@@ -0,0 +1,458 @@
+/*
+ * The MIT License
+ *
+ * Copyright (C) 2017-2019 Alexander Saprykin <saprykin.spb@gmail.com>
+ *
+ * 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.
+ */
+
+#define INCL_DOSPROCESS
+#define INCL_DOSERRORS
+#include <os2.h>
+#include <process.h>
+
+#ifdef P_DEBUG
+#  undef P_DEBUG
+#endif
+
+#include "pmem.h"
+#include "patomic.h"
+#include "pmutex.h"
+#include "puthread.h"
+#include "puthread-private.h"
+
+#include <stdlib.h>
+
+typedef TID puthread_hdl;
+
+struct PUThread_ {
+	PUThreadBase	base;
+	puthread_hdl	hdl;
+	PUThreadFunc	proxy;
+};
+
+struct PUThreadKey_ {
+	PULONG		key;
+	PDestroyFunc	free_func;
+};
+
+typedef struct PUThreadDestructor_ PUThreadDestructor;
+
+struct PUThreadDestructor_ {
+	PULONG			key;
+	PDestroyFunc		free_func;
+	PUThreadDestructor	*next;
+};
+
+static PUThreadDestructor * volatile pp_uthread_tls_destructors = NULL;
+static PMutex *pp_uthread_tls_mutex = NULL;
+
+static void pp_uthread_get_os2_priority (PUThreadPriority prio, PULONG thr_class, PLONG thr_level);
+static PULONG pp_uthread_get_tls_key (PUThreadKey *key);
+static void pp_uthread_clean_destructors (void);
+static void pp_uthread_os2_proxy (ppointer data);
+
+static void
+pp_uthread_get_os2_priority (PUThreadPriority prio, PULONG thr_class, PLONG thr_level)
+{
+	switch (prio) {
+		case P_UTHREAD_PRIORITY_INHERIT:
+		{
+			APIRET	ulrc;
+			PTIB	ptib = NULL;
+
+			if (P_UNLIKELY (DosGetInfoBlocks (&ptib, NULL) != NO_ERROR)) {
+				P_WARNING ("PUThread::pp_uthread_get_os2_priority: DosGetInfoBlocks() failed");
+				*thr_class = PRTYC_REGULAR;
+				*thr_level = 0;
+			} else {
+				*thr_class = ((ptib->tib_ptib2->tib2_ulpri) >> 8) & 0x00FF;
+				*thr_level = (ptib->tib_ptib2->tib2_ulpri) & 0x001F;
+			}
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_IDLE:
+		{
+			*thr_class = PRTYC_IDLETIME;
+			*thr_level = 0;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_LOWEST:
+		{
+			*thr_class = PRTYC_REGULAR;
+			*thr_level = PRTYD_MINIMUM;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_LOW:
+		{
+			*thr_class = PRTYC_REGULAR;
+			*thr_level = PRTYD_MINIMUM / 2;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_NORMAL:
+		{
+			*thr_class = PRTYC_REGULAR;
+			*thr_level = 0;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_HIGH:
+		{
+			*thr_class = PRTYC_REGULAR;
+			*thr_level = PRTYD_MAXIMUM / 2;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_HIGHEST:
+		{
+			*thr_class = PRTYC_REGULAR;
+			*thr_level = PRTYD_MAXIMUM;
+
+			return;
+		}
+		case P_UTHREAD_PRIORITY_TIMECRITICAL:
+		{
+			*thr_class = PRTYC_TIMECRITICAL;
+			*thr_level = 0;
+
+			return;
+		}
+	}
+}
+
+static PULONG
+pp_uthread_get_tls_key (PUThreadKey *key)
+{
+	PULONG thread_key;
+
+	thread_key = (PULONG) p_atomic_pointer_get ((ppointer) &key->key);
+
+	if (P_LIKELY (thread_key != NULL))
+		return thread_key;
+
+	p_mutex_lock (pp_uthread_tls_mutex);
+
+	thread_key = key->key;
+
+	if (P_LIKELY (thread_key == NULL)) {
+		PUThreadDestructor *destr = NULL;
+
+		if (key->free_func != NULL) {
+			if (P_UNLIKELY ((destr = p_malloc0 (sizeof (PUThreadDestructor))) == NULL)) {
+				P_ERROR ("PUThread::pp_uthread_get_tls_key: failed to allocate memory");
+				p_mutex_unlock (pp_uthread_tls_mutex);
+				return NULL;
+			}
+		}
+
+		if (P_UNLIKELY (DosAllocThreadLocalMemory (1, &thread_key) != NO_ERROR)) {
+			P_ERROR ("PUThread::pp_uthread_get_tls_key: DosAllocThreadLocalMemory() failed");
+			p_free (destr);
+			p_mutex_unlock (pp_uthread_tls_mutex);
+			return NULL;
+		}
+
+		if (destr != NULL) {
+			destr->key       = thread_key;
+			destr->free_func = key->free_func;
+			destr->next      = pp_uthread_tls_destructors;
+
+			/* At the same time thread exit could be performed at there is no
+			 * lock for the global destructor list */
+			if (P_UNLIKELY (p_atomic_pointer_compare_and_exchange ((void * volatile *) &pp_uthread_tls_destructors,
+									       (void *) destr->next,
+									       (void *) destr) == FALSE)) {
+				P_ERROR ("PUThread::pp_uthread_get_tls_key: p_atomic_pointer_compare_and_exchange() failed");
+
+				if (P_UNLIKELY (DosFreeThreadLocalMemory (thread_key) != NO_ERROR))
+					P_ERROR ("PUThread::pp_uthread_get_tls_key: DosFreeThreadLocalMemory() failed");
+
+				p_free (destr);
+				p_mutex_unlock (pp_uthread_tls_mutex);
+				return NULL;
+			}
+		}
+
+		key->key = thread_key;
+	}
+
+	p_mutex_unlock (pp_uthread_tls_mutex);
+
+	return thread_key;
+}
+
+static void 
+pp_uthread_clean_destructors (void)
+{
+	pboolean was_called;
+
+	do {
+		PUThreadDestructor *destr;
+
+		was_called = FALSE;
+
+		destr = (PUThreadDestructor *) p_atomic_pointer_get ((const void * volatile *) &pp_uthread_tls_destructors);
+
+		while (destr != NULL) {
+			PULONG value;
+
+			value = destr->key;
+
+			if (value != NULL && ((ppointer) *value) != NULL && destr->free_func != NULL) {
+				*destr->key = (ULONG) NULL;
+				destr->free_func ((ppointer) *value);
+				was_called = TRUE;
+			}
+
+			destr = destr->next;
+		}
+	} while (was_called);
+}
+
+static void
+pp_uthread_os2_proxy (ppointer data)
+{
+	PUThread *thread = data;
+
+	thread->proxy (thread);
+
+	pp_uthread_clean_destructors ();
+}
+
+void
+p_uthread_init_internal (void)
+{
+	if (P_LIKELY (pp_uthread_tls_mutex == NULL))
+		pp_uthread_tls_mutex = p_mutex_new ();
+}
+
+void
+p_uthread_shutdown_internal (void)
+{
+	PUThreadDestructor *destr;
+
+	pp_uthread_clean_destructors ();
+
+	destr = pp_uthread_tls_destructors;
+
+	while (destr != NULL) {
+		PUThreadDestructor *next_destr = destr->next;
+
+		p_free (destr);
+		destr = next_destr;
+	}
+
+	pp_uthread_tls_destructors = NULL;
+
+	if (P_LIKELY (pp_uthread_tls_mutex != NULL)) {
+		p_mutex_free (pp_uthread_tls_mutex);
+		pp_uthread_tls_mutex = NULL;
+	}
+}
+
+void
+p_uthread_win32_thread_detach (void)
+{
+}
+
+PUThread *
+p_uthread_create_internal (PUThreadFunc		func,
+			   pboolean		joinable,
+			   PUThreadPriority	prio,
+			   psize		stack_size)
+{
+	PUThread *ret;
+
+	if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PUThread))) == NULL)) {
+		P_ERROR ("PUThread::p_uthread_create_internal: failed to allocate memory");
+		return NULL;
+	}
+
+	ret->base.joinable = joinable;
+	ret->proxy         = func;
+
+	if (P_UNLIKELY ((ret->hdl = _beginthread ((void (*) (void *)) pp_uthread_os2_proxy,
+						  NULL,
+						  (puint) stack_size,
+						  ret)) <= 0)) {
+		P_ERROR ("PUThread::p_uthread_create_internal: _beginthread() failed");
+		p_free (ret);
+		return NULL;
+	}
+
+	ret->base.prio = P_UTHREAD_PRIORITY_INHERIT;
+	p_uthread_set_priority (ret, prio);
+
+	return ret;
+}
+
+void
+p_uthread_exit_internal (void)
+{
+	pp_uthread_clean_destructors ();
+	_endthread ();
+}
+
+void
+p_uthread_wait_internal (PUThread *thread)
+{
+	APIRET ulrc;
+
+	while ((ulrc = DosWaitThread (&thread->hdl, DCWW_WAIT)) == ERROR_INTERRUPT)
+		;
+
+	if (P_UNLIKELY (ulrc != NO_ERROR && ulrc != ERROR_INVALID_THREADID))
+		P_ERROR ("PUThread::p_uthread_wait_internal: DosWaitThread() failed");
+}
+
+void
+p_uthread_set_name_internal (PUThread *thread)
+{
+	P_UNUSED (thread);
+}
+
+void
+p_uthread_free_internal (PUThread *thread)
+{
+	p_free (thread);
+}
+
+P_LIB_API void
+p_uthread_yield (void)
+{
+	DosSleep (0);
+}
+
+P_LIB_API pboolean
+p_uthread_set_priority (PUThread		*thread,
+			PUThreadPriority	prio)
+{
+	APIRET	ulrc;
+	PTIB	ptib = NULL;
+	LONG	cur_level;
+	LONG	new_level;
+	ULONG	new_class;
+
+	if (P_UNLIKELY (thread == NULL))
+		return FALSE;
+
+	if (P_UNLIKELY (DosGetInfoBlocks (&ptib, NULL) != NO_ERROR)) {
+		P_WARNING ("PUThread::p_uthread_set_priority: DosGetInfoBlocks() failed");
+		return FALSE;
+	}
+
+	cur_level = (ptib->tib_ptib2->tib2_ulpri) & 0x001F;
+
+	pp_uthread_get_os2_priority (prio, &new_class, &new_level);
+
+	if (P_UNLIKELY (DosSetPriority (PRTYS_THREAD, new_class, new_level - cur_level, 0) != NO_ERROR)) {
+		P_WARNING ("PUThread::p_uthread_set_priority: DosSetPriority() failed");
+		return FALSE;
+	}
+
+	thread->base.prio = prio;
+	return TRUE;
+}
+
+P_LIB_API P_HANDLE
+p_uthread_current_id (void)
+{
+	return (P_HANDLE) (_gettid ());
+}
+
+P_LIB_API PUThreadKey *
+p_uthread_local_new (PDestroyFunc free_func)
+{
+	PUThreadKey *ret;
+
+	if (P_UNLIKELY ((ret = p_malloc0 (sizeof (PUThreadKey))) == NULL)) {
+		P_ERROR ("PUThread::p_uthread_local_new: failed to allocate memory");
+		return NULL;
+	}
+
+	ret->free_func = free_func;
+
+	return ret;
+}
+
+P_LIB_API void
+p_uthread_local_free (PUThreadKey *key)
+{
+	if (P_UNLIKELY (key == NULL))
+		return;
+
+	p_free (key);
+}
+
+P_LIB_API ppointer
+p_uthread_get_local (PUThreadKey *key)
+{
+	PULONG tls_key;
+
+	if (P_UNLIKELY (key == NULL))
+		return NULL;
+
+	if (P_UNLIKELY ((tls_key = pp_uthread_get_tls_key (key)) == NULL))
+		return NULL;
+
+	return (ppointer) *tls_key;
+}
+
+P_LIB_API void
+p_uthread_set_local (PUThreadKey	*key,
+		     ppointer		value)
+{
+	PULONG tls_key;
+
+	if (P_UNLIKELY (key == NULL))
+		return;
+
+	tls_key = pp_uthread_get_tls_key (key);
+
+	if (P_LIKELY (tls_key != NULL))
+		*tls_key = (ULONG) value;
+}
+
+P_LIB_API void
+p_uthread_replace_local	(PUThreadKey	*key,
+			 ppointer	value)
+{
+	PULONG		tls_key;
+	ppointer	old_value;
+
+	if (P_UNLIKELY (key == NULL))
+		return;
+
+	tls_key = pp_uthread_get_tls_key (key);
+
+	if (P_UNLIKELY (tls_key == NULL))
+		return;
+
+	old_value = (ppointer) *tls_key;
+
+	if (old_value != NULL && key->free_func != NULL)
+		key->free_func (old_value);
+
+	*tls_key = (ULONG) value;
+}