xwininfo fontconfig libX11 libXau libXdmcp libXext mesa libXinerama libxcb libxcb/xcb-proto libfontenc pixman xkbcomp mkfontscale xkeyboard-config git update 4 Jun 2013

xserver          commit c21344add2fc589df83b29be5831c36a372201bd
libxcb           commit 9ae84ad187e2ba440c40f44b8eb21c82c2fdbf12
libxcb/xcb-proto commit bdfedfa57a13ff805580cfacafc70f9cc55df363
xkeyboard-config commit dad9ade4e83d1ef5a517fcc4cc9ad3a79b47acce
libX11           commit 8496122eb00ce6cd5d2308ee54f64b68c378e455
libXdmcp         commit 0b443c1b769b9c9a3b45b4252afe07e18b709ff4
libXext          commit d8366afbb0d2e4fbb1e419b1187f490522270bea
libfontenc       commit 3acba630d8b57084f7e92c15732408711ed5137a
libXinerama      commit 6e1d1dc328ba8162bba2f4694e7f3c706a1491ff
libXau           commit 899790011304c4029e15abf410e49ce7cec17e0a
xkbcomp          commit ed582f4fccd4e23abcfba8b3b03649fea6414f44
pixman           commit 2acfac5f8e097ee2ae225d986f981b55d65dd152
mkfontscale      commit 19e2cb7c6a3ec2c5b1bc0d24866fa685eef0ee13
xwininfo         commit ba0d1b0da21d2dbdd81098ed5778f3792b472e13
fontconfig       commit cd9b1033a68816a7acfbba1718ba0aa5888f6ec7
mesa             commit 7bafd88c153e395274b632e7eae4bc9fc3aec1d2

1 files changed, 267 insertions, 0 deletions

diff --git a/mesalib/src/mapi/u_current.c b/mesalib/src/mapi/u_current.c
new file mode 100644
index 000000000..344344939
--- /dev/null
+++ b/mesalib/src/mapi/u_current.c
@@ -0,0 +1,267 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * 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.
+ */
+
+
+/*
+ * This file manages the OpenGL API dispatch layer.
+ * The dispatch table (struct _glapi_table) is basically just a list
+ * of function pointers.
+ * There are functions to set/get the current dispatch table for the
+ * current thread and to manage registration/dispatch of dynamically
+ * added extension functions.
+ *
+ * It's intended that this file and the other glapi*.[ch] files are
+ * flexible enough to be reused in several places:  XFree86, DRI-
+ * based libGL.so, and perhaps the SGI SI.
+ *
+ * NOTE: There are no dependencies on Mesa in this code.
+ *
+ * Versions (API changes):
+ *   2000/02/23  - original version for Mesa 3.3 and XFree86 4.0
+ *   2001/01/16  - added dispatch override feature for Mesa 3.5
+ *   2002/06/28  - added _glapi_set_warning_func(), Mesa 4.1.
+ *   2002/10/01  - _glapi_get_proc_address() will now generate new entrypoints
+ *                 itself (using offset ~0).  _glapi_add_entrypoint() can be
+ *                 called afterward and it'll fill in the correct dispatch
+ *                 offset.  This allows DRI libGL to avoid probing for DRI
+ *                 drivers!  No changes to the public glapi interface.
+ */
+
+#include "u_current.h"
+#include "u_thread.h"
+
+#ifndef MAPI_MODE_UTIL
+
+#include "table.h"
+#include "stub.h"
+
+#else
+
+extern void init_glapi_relocs_once(void);
+extern void (*__glapi_noop_table[])(void);
+
+#define table_noop_array __glapi_noop_table
+#define stub_init_once() init_glapi_relocs_once()
+
+#endif
+
+/**
+ * \name Current dispatch and current context control variables
+ *
+ * Depending on whether or not multithreading is support, and the type of
+ * support available, several variables are used to store the current context
+ * pointer and the current dispatch table pointer.  In the non-threaded case,
+ * the variables \c _glapi_Dispatch and \c _glapi_Context are used for this
+ * purpose.
+ *
+ * In the "normal" threaded case, the variables \c _glapi_Dispatch and
+ * \c _glapi_Context will be \c NULL if an application is detected as being
+ * multithreaded.  Single-threaded applications will use \c _glapi_Dispatch
+ * and \c _glapi_Context just like the case without any threading support.
+ * When \c _glapi_Dispatch and \c _glapi_Context are \c NULL, the thread state
+ * data \c _gl_DispatchTSD and \c ContextTSD are used.  Drivers and the
+ * static dispatch functions access these variables via \c _glapi_get_dispatch
+ * and \c _glapi_get_context.
+ *
+ * There is a race condition in setting \c _glapi_Dispatch to \c NULL.  It is
+ * possible for the original thread to be setting it at the same instant a new
+ * thread, perhaps running on a different processor, is clearing it.  Because
+ * of that, \c ThreadSafe, which can only ever be changed to \c GL_TRUE, is
+ * used to determine whether or not the application is multithreaded.
+ * 
+ * In the TLS case, the variables \c _glapi_Dispatch and \c _glapi_Context are
+ * hardcoded to \c NULL.  Instead the TLS variables \c _glapi_tls_Dispatch and
+ * \c _glapi_tls_Context are used.  Having \c _glapi_Dispatch and
+ * \c _glapi_Context be hardcoded to \c NULL maintains binary compatability
+ * between TLS enabled loaders and non-TLS DRI drivers.
+ */
+/*@{*/
+#if defined(GLX_USE_TLS)
+
+__thread struct mapi_table *u_current_table
+    __attribute__((tls_model("initial-exec")))
+    = (struct mapi_table *) table_noop_array;
+
+__thread void *u_current_user
+    __attribute__((tls_model("initial-exec")));
+
+#else
+
+struct mapi_table *u_current_table =
+   (struct mapi_table *) table_noop_array;
+void *u_current_user;
+
+#ifdef THREADS
+struct u_tsd u_current_table_tsd;
+static struct u_tsd u_current_user_tsd;
+static int ThreadSafe;
+#endif /* THREADS */
+
+#endif /* defined(GLX_USE_TLS) */
+/*@}*/
+
+
+void
+u_current_destroy(void)
+{
+#if defined(THREADS) && defined(_WIN32)
+   u_tsd_destroy(&u_current_table_tsd);
+   u_tsd_destroy(&u_current_user_tsd);
+#endif
+}
+
+
+#if defined(THREADS) && !defined(GLX_USE_TLS)
+
+static void
+u_current_init_tsd(void)
+{
+   u_tsd_init(&u_current_table_tsd);
+   u_tsd_init(&u_current_user_tsd);
+}
+
+/**
+ * Mutex for multithread check.
+ */
+u_mutex_declare_static(ThreadCheckMutex);
+
+/**
+ * We should call this periodically from a function such as glXMakeCurrent
+ * in order to test if multiple threads are being used.
+ */
+void
+u_current_init(void)
+{
+   static unsigned long knownID;
+   static int firstCall = 1;
+
+   if (ThreadSafe)
+      return;
+
+   u_mutex_lock(ThreadCheckMutex);
+   if (firstCall) {
+      u_current_init_tsd();
+
+      knownID = u_thread_self();
+      firstCall = 0;
+   }
+   else if (knownID != u_thread_self()) {
+      ThreadSafe = 1;
+      u_current_set(NULL);
+      u_current_set_user(NULL);
+   }
+   u_mutex_unlock(ThreadCheckMutex);
+}
+
+#else
+
+void
+u_current_init(void)
+{
+}
+
+#endif
+
+
+
+/**
+ * Set the current context pointer for this thread.
+ * The context pointer is an opaque type which should be cast to
+ * void from the real context pointer type.
+ */
+void
+u_current_set_user(const void *ptr)
+{
+   u_current_init();
+
+#if defined(GLX_USE_TLS)
+   u_current_user = (void *) ptr;
+#elif defined(THREADS)
+   u_tsd_set(&u_current_user_tsd, (void *) ptr);
+   u_current_user = (ThreadSafe) ? NULL : (void *) ptr;
+#else
+   u_current_user = (void *) ptr;
+#endif
+}
+
+/**
+ * Get the current context pointer for this thread.
+ * The context pointer is an opaque type which should be cast from
+ * void to the real context pointer type.
+ */
+void *
+u_current_get_user_internal(void)
+{
+#if defined(GLX_USE_TLS)
+   return u_current_user;
+#elif defined(THREADS)
+   return (ThreadSafe)
+      ? u_tsd_get(&u_current_user_tsd)
+      : u_current_user;
+#else
+   return u_current_user;
+#endif
+}
+
+/**
+ * Set the global or per-thread dispatch table pointer.
+ * If the dispatch parameter is NULL we'll plug in the no-op dispatch
+ * table (__glapi_noop_table).
+ */
+void
+u_current_set(const struct mapi_table *tbl)
+{
+   u_current_init();
+
+   stub_init_once();
+
+   if (!tbl)
+      tbl = (const struct mapi_table *) table_noop_array;
+
+#if defined(GLX_USE_TLS)
+   u_current_table = (struct mapi_table *) tbl;
+#elif defined(THREADS)
+   u_tsd_set(&u_current_table_tsd, (void *) tbl);
+   u_current_table = (ThreadSafe) ? NULL : (void *) tbl;
+#else
+   u_current_table = (struct mapi_table *) tbl;
+#endif
+}
+
+/**
+ * Return pointer to current dispatch table for calling thread.
+ */
+struct mapi_table *
+u_current_get_internal(void)
+{
+#if defined(GLX_USE_TLS)
+   return u_current_table;
+#elif defined(THREADS)
+   return (struct mapi_table *) ((ThreadSafe) ?
+         u_tsd_get(&u_current_table_tsd) : (void *) u_current_table);
+#else
+   return u_current_table;
+#endif
+}