--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2012 VMware, Inc.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * u_debug_flush.c Debug flush and map-related issues:
+ * - Flush while synchronously mapped.
+ * - Command stream reference while synchronously mapped.
+ * - Synchronous map while referenced on command stream.
+ * - Recursive maps.
+ * - Unmap while not mapped.
+ *
+ * @author Thomas Hellstrom <thellstrom@vmware.com>
+ */
+
+#ifdef DEBUG
+#include "pipe/p_compiler.h"
+#include "util/u_debug_stack.h"
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+#include "util/u_debug_flush.h"
+#include "util/u_hash_table.h"
+#include "util/u_double_list.h"
+#include "util/u_inlines.h"
+#include "os/os_thread.h"
+#include <stdio.h>
+
+struct debug_flush_buf {
+ /* Atomic */
+ struct pipe_reference reference; /* Must be the first member. */
+ pipe_mutex mutex;
+ /* Immutable */
+ boolean supports_unsync;
+ unsigned bt_depth;
+ /* Protected by mutex */
+ boolean mapped;
+ boolean mapped_sync;
+ struct debug_stack_frame *map_frame;
+};
+
+struct debug_flush_item {
+ struct debug_flush_buf *fbuf;
+ unsigned bt_depth;
+ struct debug_stack_frame *ref_frame;
+};
+
+struct debug_flush_ctx {
+ /* Contexts are used by a single thread at a time */
+ unsigned bt_depth;
+ boolean catch_map_of_referenced;
+ struct util_hash_table *ref_hash;
+ struct list_head head;
+};
+
+pipe_static_mutex(list_mutex);
+static struct list_head ctx_list = {&ctx_list, &ctx_list};
+
+static struct debug_stack_frame *
+debug_flush_capture_frame(int start, int depth)
+{
+ struct debug_stack_frame *frames;
+
+ frames = CALLOC(depth, sizeof(*frames));
+ if (!frames)
+ return NULL;
+
+ debug_backtrace_capture(frames, start, depth);
+ return frames;
+}
+
+static int
+debug_flush_pointer_compare(void *key1, void *key2)
+{
+ return (key1 == key2) ? 0 : 1;
+}
+
+static unsigned
+debug_flush_pointer_hash(void *key)
+{
+ return (unsigned) (unsigned long) key;
+}
+
+struct debug_flush_buf *
+debug_flush_buf_create(boolean supports_unsync, unsigned bt_depth)
+{
+ struct debug_flush_buf *fbuf = CALLOC_STRUCT(debug_flush_buf);
+
+ if (!fbuf)
+ goto out_no_buf;
+
+ fbuf->supports_unsync = supports_unsync;
+ fbuf->bt_depth = bt_depth;
+ pipe_reference_init(&fbuf->reference, 1);
+ pipe_mutex_init(fbuf->mutex);
+
+ return fbuf;
+out_no_buf:
+ debug_printf("Debug flush buffer creation failed.\n");
+ debug_printf("Debug flush checking for this buffer will be incomplete.\n");
+ return NULL;
+}
+
+void
+debug_flush_buf_reference(struct debug_flush_buf **dst,
+ struct debug_flush_buf *src)
+{
+ struct debug_flush_buf *fbuf = *dst;
+
+ if (pipe_reference(&(*dst)->reference, &src->reference)) {
+ if (fbuf->map_frame)
+ FREE(fbuf->map_frame);
+
+ FREE(fbuf);
+ }
+
+ *dst = src;
+}
+
+static void
+debug_flush_item_destroy(struct debug_flush_item *item)
+{
+ debug_flush_buf_reference(&item->fbuf, NULL);
+
+ if (item->ref_frame)
+ FREE(item->ref_frame);
+
+ FREE(item);
+}
+
+struct debug_flush_ctx *
+debug_flush_ctx_create(boolean catch_reference_of_mapped, unsigned bt_depth)
+{
+ struct debug_flush_ctx *fctx = CALLOC_STRUCT(debug_flush_ctx);
+
+ if (!fctx)
+ goto out_no_ctx;
+
+ fctx->ref_hash = util_hash_table_create(debug_flush_pointer_hash,
+ debug_flush_pointer_compare);
+
+ if (!fctx->ref_hash)
+ goto out_no_ref_hash;
+
+ fctx->bt_depth = bt_depth;
+ pipe_mutex_lock(list_mutex);
+ list_addtail(&fctx->head, &ctx_list);
+ pipe_mutex_unlock(list_mutex);
+
+ return fctx;
+
+ out_no_ref_hash:
+ FREE(fctx);
+out_no_ctx:
+ debug_printf("Debug flush context creation failed.\n");
+ debug_printf("Debug flush checking for this context will be incomplete.\n");
+ return NULL;
+}
+
+static void
+debug_flush_alert(const char *s, const char *op,
+ unsigned start, unsigned depth,
+ boolean continued,
+ boolean capture,
+ const struct debug_stack_frame *frame)
+{
+ if (capture)
+ frame = debug_flush_capture_frame(start, depth);
+
+ if (s)
+ debug_printf("%s ", s);
+ if (frame) {
+ debug_printf("%s backtrace follows:\n", op);
+ debug_backtrace_dump(frame, depth);
+ } else
+ debug_printf("No %s backtrace was captured.\n", op);
+
+ if (continued)
+ debug_printf("**********************************\n");
+ else
+ debug_printf("*********END OF MESSAGE***********\n\n\n");
+
+ if (capture)
+ FREE((void *)frame);
+}
+
+
+void
+debug_flush_map(struct debug_flush_buf *fbuf, unsigned flags)
+{
+ boolean mapped_sync = FALSE;
+
+ if (!fbuf)
+ return;
+
+ pipe_mutex_lock(fbuf->mutex);
+ if (fbuf->mapped) {
+ debug_flush_alert("Recursive map detected.", "Map",
+ 2, fbuf->bt_depth, TRUE, TRUE, NULL);
+ debug_flush_alert(NULL, "Previous map", 0, fbuf->bt_depth, FALSE,
+ FALSE, fbuf->map_frame);
+ } else if (!(flags & PIPE_TRANSFER_UNSYNCHRONIZED) ||
+ !fbuf->supports_unsync) {
+ fbuf->mapped_sync = mapped_sync = TRUE;
+ }
+ fbuf->map_frame = debug_flush_capture_frame(1, fbuf->bt_depth);
+ fbuf->mapped = TRUE;
+ pipe_mutex_unlock(fbuf->mutex);
+
+ if (mapped_sync) {
+ struct debug_flush_ctx *fctx;
+
+ pipe_mutex_lock(list_mutex);
+ LIST_FOR_EACH_ENTRY(fctx, &ctx_list, head) {
+ struct debug_flush_item *item =
+ util_hash_table_get(fctx->ref_hash, fbuf);
+
+ if (item && fctx->catch_map_of_referenced) {
+ debug_flush_alert("Already referenced map detected.",
+ "Map", 2, fbuf->bt_depth, TRUE, TRUE, NULL);
+ debug_flush_alert(NULL, "Reference", 0, item->bt_depth,
+ FALSE, FALSE, item->ref_frame);
+ }
+ }
+ pipe_mutex_unlock(list_mutex);
+ }
+}
+
+void
+debug_flush_unmap(struct debug_flush_buf *fbuf)
+{
+ if (!fbuf)
+ return;
+
+ pipe_mutex_lock(fbuf->mutex);
+ if (!fbuf->mapped)
+ debug_flush_alert("Unmap not previously mapped detected.", "Map",
+ 2, fbuf->bt_depth, FALSE, TRUE, NULL);
+
+ fbuf->mapped_sync = FALSE;
+ fbuf->mapped = FALSE;
+ if (fbuf->map_frame) {
+ FREE(fbuf->map_frame);
+ fbuf->map_frame = NULL;
+ }
+ pipe_mutex_unlock(fbuf->mutex);
+}
+
+void
+debug_flush_cb_reference(struct debug_flush_ctx *fctx,
+ struct debug_flush_buf *fbuf)
+{
+ struct debug_flush_item *item;
+
+ if (!fctx || !fbuf)
+ return;
+
+ item = util_hash_table_get(fctx->ref_hash, fbuf);
+
+ pipe_mutex_lock(fbuf->mutex);
+ if (fbuf->mapped_sync) {
+ debug_flush_alert("Reference of mapped buffer detected.", "Reference",
+ 2, fctx->bt_depth, TRUE, TRUE, NULL);
+ debug_flush_alert(NULL, "Map", 0, fbuf->bt_depth, FALSE,
+ FALSE, fbuf->map_frame);
+ }
+ pipe_mutex_unlock(fbuf->mutex);
+
+ if (!item) {
+ item = CALLOC_STRUCT(debug_flush_item);
+ if (item) {
+ debug_flush_buf_reference(&item->fbuf, fbuf);
+ item->bt_depth = fctx->bt_depth;
+ item->ref_frame = debug_flush_capture_frame(2, item->bt_depth);
+ if (util_hash_table_set(fctx->ref_hash, fbuf, item) != PIPE_OK) {
+ debug_flush_item_destroy(item);
+ goto out_no_item;
+ }
+ return;
+ }
+ goto out_no_item;
+ }
+ return;
+
+out_no_item:
+ debug_printf("Debug flush command buffer reference creation failed.\n");
+ debug_printf("Debug flush checking will be incomplete "
+ "for this command batch.\n");
+}
+
+static enum pipe_error
+debug_flush_might_flush_cb(void *key, void *value, void *data)
+{
+ struct debug_flush_item *item =
+ (struct debug_flush_item *) value;
+ struct debug_flush_buf *fbuf = item->fbuf;
+ const char *reason = (const char *) data;
+ char message[80];
+
+ snprintf(message, sizeof(message),
+ "%s referenced mapped buffer detected.", reason);
+
+ pipe_mutex_lock(fbuf->mutex);
+ if (fbuf->mapped_sync) {
+ debug_flush_alert(message, reason, 3, item->bt_depth, TRUE, TRUE, NULL);
+ debug_flush_alert(NULL, "Map", 0, fbuf->bt_depth, TRUE, FALSE,
+ fbuf->map_frame);
+ debug_flush_alert(NULL, "First reference", 0, item->bt_depth, FALSE,
+ FALSE, item->ref_frame);
+ }
+ pipe_mutex_unlock(fbuf->mutex);
+
+ return PIPE_OK;
+}
+
+void
+debug_flush_might_flush(struct debug_flush_ctx *fctx)
+{
+ if (!fctx)
+ return;
+
+ util_hash_table_foreach(fctx->ref_hash,
+ debug_flush_might_flush_cb,
+ "Might flush");
+}
+
+static enum pipe_error
+debug_flush_flush_cb(void *key, void *value, void *data)
+{
+ struct debug_flush_item *item =
+ (struct debug_flush_item *) value;
+
+ debug_flush_item_destroy(item);
+
+ return PIPE_OK;
+}
+
+
+void
+debug_flush_flush(struct debug_flush_ctx *fctx)
+{
+ if (!fctx)
+ return;
+
+ util_hash_table_foreach(fctx->ref_hash,
+ debug_flush_might_flush_cb,
+ "Flush");
+ util_hash_table_foreach(fctx->ref_hash,
+ debug_flush_flush_cb,
+ NULL);
+ util_hash_table_clear(fctx->ref_hash);
+}
+
+void
+debug_flush_ctx_destroy(struct debug_flush_ctx *fctx)
+{
+ if (!fctx)
+ return;
+
+ list_del(&fctx->head);
+ util_hash_table_foreach(fctx->ref_hash,
+ debug_flush_flush_cb,
+ NULL);
+ util_hash_table_clear(fctx->ref_hash);
+ util_hash_table_destroy(fctx->ref_hash);
+ FREE(fctx);
+}
+#endif
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2012 VMware, Inc.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * u_debug_flush.h - Header for debugging flush- and map- related issues.
+ * - Flush while synchronously mapped.
+ * - Command stream reference while synchronously mapped.
+ * - Synchronous map while referenced on command stream.
+ * - Recursive maps.
+ * - Unmap while not mapped.
+ *
+ * @author Thomas Hellstrom <thellstrom@vmware.com>
+ */
+#ifdef DEBUG
+
+#ifndef U_DEBUG_FLUSH_H_
+#define U_DEBUG_FLUSH_H_
+
+struct debug_flush_buf;
+struct debug_flush_ctx;
+
+/**
+ * Create a buffer (AKA allocation) representation.
+ *
+ * @param support_unsync Whether unsynchronous maps are truly supported.
+ * @param bt_depth Depth of backtrace to be captured for this buffer
+ * representation.
+ */
+struct debug_flush_buf *
+debug_flush_buf_create(boolean supports_unsync, unsigned bt_depth);
+
+/**
+ * Reference a buffer representation.
+ *
+ * @param dst Pointer copy destination
+ * @param src Pointer copy source (may be NULL).
+ *
+ * Replace a pointer to a buffer representation with proper refcounting.
+ */
+void
+debug_flush_buf_reference(struct debug_flush_buf **dst,
+ struct debug_flush_buf *src);
+
+/**
+ * Create a context representation.
+ *
+ * @param catch_map_of_referenced Whether to catch synchronous maps of buffers
+ * already present on the command stream.
+ * @param bt_depth Depth of backtrace to be captured for this context
+ * representation.
+ */
+struct debug_flush_ctx *
+debug_flush_ctx_create(boolean catch_map_of_referenced, unsigned bt_depth);
+
+/**
+ * Destroy a context representation.
+ *
+ * @param fctx The context representation to destroy.
+ */
+void
+debug_flush_ctx_destroy(struct debug_flush_ctx *fctx);
+
+/**
+ * Map annotation
+ *
+ * @param fbuf The buffer representation to map.
+ * @param flags Pipebuffer flags for the map.
+ *
+ * Used to annotate a map of the buffer described by the buffer representation.
+ */
+void debug_flush_map(struct debug_flush_buf *fbuf, unsigned flags);
+
+/**
+ * Unmap annotation
+ *
+ * @param fbuf The buffer representation to map.
+ *
+ * Used to annotate an unmap of the buffer described by the
+ * buffer representation.
+ */
+void debug_flush_unmap(struct debug_flush_buf *fbuf);
+
+/**
+ * Might flush annotation
+ *
+ * @param fctx The context representation that might be flushed.
+ *
+ * Used to annotate a conditional (possible) flush of the given context.
+ */
+void debug_flush_might_flush(struct debug_flush_ctx *fctx);
+
+/**
+ * Flush annotation
+ *
+ * @param fctx The context representation that is flushed.
+ *
+ * Used to annotate a real flush of the given context.
+ */
+void debug_flush_flush(struct debug_flush_ctx *fctx);
+
+
+/**
+ * Flush annotation
+ *
+ * @param fctx The context representation that is flushed.
+ *
+ * Used to annotate a real flush of the given context.
+ */
+void debug_flush_cb_reference(struct debug_flush_ctx *fctx,
+ struct debug_flush_buf *fbuf);
+
+#endif
+#endif
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