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df07f6d915
We might need access to the address context when resolving symbols so that we know if the address range applies to us.
141 lines
4.6 KiB
C
141 lines
4.6 KiB
C
/* sp-symbol-resolver.c
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*
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* Copyright (C) 2016 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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#include "symbols/sp-symbol-resolver.h"
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G_DEFINE_INTERFACE (SpSymbolResolver, sp_symbol_resolver, G_TYPE_OBJECT)
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static gchar *
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sp_symbol_resolver_real_resolve (SpSymbolResolver *self,
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guint64 time,
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GPid pid,
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SpCaptureAddress address,
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GQuark *tag)
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{
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*tag = 0;
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return NULL;
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}
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static gchar *
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sp_symbol_resolver_real_resolve_with_context (SpSymbolResolver *self,
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guint64 time,
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GPid pid,
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SpAddressContext context,
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SpCaptureAddress address,
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GQuark *tag)
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{
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*tag = 0;
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if (SP_SYMBOL_RESOLVER_GET_IFACE (self)->resolve)
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return SP_SYMBOL_RESOLVER_GET_IFACE (self)->resolve (self, time, pid, address, tag);
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return NULL;
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}
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static void
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sp_symbol_resolver_default_init (SpSymbolResolverInterface *iface)
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{
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iface->resolve = sp_symbol_resolver_real_resolve;
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iface->resolve_with_context = sp_symbol_resolver_real_resolve_with_context;
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}
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void
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sp_symbol_resolver_load (SpSymbolResolver *self,
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SpCaptureReader *reader)
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{
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g_return_if_fail (SP_IS_SYMBOL_RESOLVER (self));
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g_return_if_fail (reader != NULL);
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if (SP_SYMBOL_RESOLVER_GET_IFACE (self)->load)
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SP_SYMBOL_RESOLVER_GET_IFACE (self)->load (self, reader);
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}
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/**
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* sp_symbol_resolver_resolve:
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* @self: A #SpSymbolResolver
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* @time: The time of the sample
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* @pid: The process generating the sample
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* @address: the sample address
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* @tag: (out): A tag for the symbol.
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*
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* Gets the symbol name for @address that was part of process @pid
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* at @time. Optionally, you can set @tag to a quark describing the
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* symbol. This can be used to provide a bit more information when
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* rendering the treeview. You might choose to describe the library
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* such as "GObject" or "GTK+" or "Linux" for the kernel.
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*
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* Returns: (nullable) (transfer full): A newly allocated string, or %NULL.
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*/
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gchar *
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sp_symbol_resolver_resolve (SpSymbolResolver *self,
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guint64 time,
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GPid pid,
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SpCaptureAddress address,
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GQuark *tag)
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{
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GQuark dummy;
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g_return_val_if_fail (SP_IS_SYMBOL_RESOLVER (self), NULL);
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if (tag == NULL)
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tag = &dummy;
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*tag = 0;
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if (SP_SYMBOL_RESOLVER_GET_IFACE (self)->resolve)
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return SP_SYMBOL_RESOLVER_GET_IFACE (self)->resolve (self, time, pid, address, tag);
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return NULL;
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}
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/**
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* sp_symbol_resolver_resolve_with_context:
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* @self: A #SpSymbolResolver
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* @time: The time of the sample
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* @pid: The process generating the sample
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* @context: the address context
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* @address: the sample address
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* @tag: (out): A tag for the symbol.
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*
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* This function is like sp_symbol_resolver_resolve() but allows
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* access to the address context, which might be necessary to
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* determine the difference between user space and kernel space
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* addresses.
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*
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* Returns: (nullable) (transfer full): A newly allocated string, or %NULL.
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*/
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gchar *
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sp_symbol_resolver_resolve_with_context (SpSymbolResolver *self,
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guint64 time,
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GPid pid,
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SpAddressContext context,
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SpCaptureAddress address,
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GQuark *tag)
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{
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GQuark dummy;
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g_return_val_if_fail (SP_IS_SYMBOL_RESOLVER (self), NULL);
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if (tag == NULL)
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tag = &dummy;
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*tag = 0;
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return SP_SYMBOL_RESOLVER_GET_IFACE (self)->resolve_with_context (self, time, pid, context, address, tag);
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}
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