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https://github.com/varun-r-mallya/sysprof.git
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53c718b708
As we gain in usage, we need to be more careful about using a prefix that will not collide with other symbols. So version 3 of our ABI will change to using Sysprof/SYSPROF/sysprof as the various prefixes. The soname/api version bump will happen later on this branch so that things are easier to test up until then.
126 lines
3.9 KiB
C
126 lines
3.9 KiB
C
/* sysprof-jitmap-symbol-resolver.c
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*
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* Copyright 2016-2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "config.h"
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#include "sysprof-kernel-symbol.h"
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#include "sysprof-jitmap-symbol-resolver.h"
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struct _SysprofJitmapSymbolResolver
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{
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GObject parent_instance;
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GHashTable *jitmap;
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};
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static void symbol_resolver_iface_init (SysprofSymbolResolverInterface *iface);
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G_DEFINE_TYPE_EXTENDED (SysprofJitmapSymbolResolver,
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sysprof_jitmap_symbol_resolver,
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G_TYPE_OBJECT,
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0,
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G_IMPLEMENT_INTERFACE (SYSPROF_TYPE_SYMBOL_RESOLVER,
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symbol_resolver_iface_init))
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static void
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sysprof_jitmap_symbol_resolver_finalize (GObject *object)
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{
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SysprofJitmapSymbolResolver *self = (SysprofJitmapSymbolResolver *)object;
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g_clear_pointer (&self->jitmap, g_hash_table_unref);
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G_OBJECT_CLASS (sysprof_jitmap_symbol_resolver_parent_class)->finalize (object);
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}
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static void
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sysprof_jitmap_symbol_resolver_class_init (SysprofJitmapSymbolResolverClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = sysprof_jitmap_symbol_resolver_finalize;
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}
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static void
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sysprof_jitmap_symbol_resolver_init (SysprofJitmapSymbolResolver *self)
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{
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self->jitmap = g_hash_table_new_full (NULL, NULL, NULL, g_free);
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}
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static void
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sysprof_jitmap_symbol_resolver_load (SysprofSymbolResolver *resolver,
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SysprofCaptureReader *reader)
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{
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SysprofJitmapSymbolResolver *self = (SysprofJitmapSymbolResolver *)resolver;
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SysprofCaptureFrameType type;
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g_assert (SYSPROF_IS_JITMAP_SYMBOL_RESOLVER (self));
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g_assert (reader != NULL);
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while (sysprof_capture_reader_peek_type (reader, &type))
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{
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g_autoptr(GHashTable) jitmap = NULL;
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GHashTableIter iter;
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SysprofCaptureAddress addr;
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const gchar *str;
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if (type != SYSPROF_CAPTURE_FRAME_JITMAP)
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{
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if (!sysprof_capture_reader_skip (reader))
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return;
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continue;
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}
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if (!(jitmap = sysprof_capture_reader_read_jitmap (reader)))
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return;
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g_hash_table_iter_init (&iter, jitmap);
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while (g_hash_table_iter_next (&iter, (gpointer *)&addr, (gpointer *)&str))
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g_hash_table_insert (self->jitmap, GSIZE_TO_POINTER (addr), g_strdup (str));
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}
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}
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static gchar *
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sysprof_jitmap_symbol_resolver_resolve (SysprofSymbolResolver *resolver,
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guint64 time,
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GPid pid,
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SysprofCaptureAddress address,
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GQuark *tag)
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{
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SysprofJitmapSymbolResolver *self = (SysprofJitmapSymbolResolver *)resolver;
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g_assert (SYSPROF_IS_JITMAP_SYMBOL_RESOLVER (self));
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*tag = 0;
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return g_strdup (g_hash_table_lookup (self->jitmap, GSIZE_TO_POINTER (address)));
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}
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static void
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symbol_resolver_iface_init (SysprofSymbolResolverInterface *iface)
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{
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iface->load = sysprof_jitmap_symbol_resolver_load;
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iface->resolve = sysprof_jitmap_symbol_resolver_resolve;
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}
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SysprofSymbolResolver *
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sysprof_jitmap_symbol_resolver_new (void)
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{
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return g_object_new (SYSPROF_TYPE_JITMAP_SYMBOL_RESOLVER, NULL);
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}
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