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https://github.com/varun-r-mallya/sysprof.git
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e8531ebe58
This allows caching the interface vfunc to reduce the overhead of accessing each instruction pointer in the array.
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
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* sysprof-document-traceable.c
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*
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* Copyright 2023 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-document-traceable.h"
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G_DEFINE_INTERFACE (SysprofDocumentTraceable, sysprof_document_traceable, SYSPROF_TYPE_DOCUMENT_FRAME)
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static void
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sysprof_document_traceable_default_init (SysprofDocumentTraceableInterface *iface)
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{
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/**
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* SysprofDocumentTraceable:stack-depth:
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*
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* The "stack-depth" property contains the number of addresses collected
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* in the backtrace.
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*
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* You may use this value to retrieve the addresses from 0 to ("stack-depth"-1)
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* by calling sysprof_document_traceable_get_stack_address().
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*
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* Since: 45
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*/
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g_object_interface_install_property (iface,
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g_param_spec_uint ("stack-depth", NULL, NULL,
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0, G_MAXUINT16, 0,
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(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
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}
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guint
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sysprof_document_traceable_get_stack_depth (SysprofDocumentTraceable *self)
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{
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return SYSPROF_DOCUMENT_TRACEABLE_GET_IFACE (self)->get_stack_depth (self);
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}
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guint64
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sysprof_document_traceable_get_stack_address (SysprofDocumentTraceable *self,
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guint position)
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{
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return SYSPROF_DOCUMENT_TRACEABLE_GET_IFACE (self)->get_stack_address (self, position);
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}
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guint
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sysprof_document_traceable_get_stack_addresses (SysprofDocumentTraceable *self,
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guint64 *addresses,
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guint n_addresses)
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{
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guint64 (*decoder) (SysprofDocumentTraceable *, guint);
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g_return_val_if_fail (SYSPROF_IS_DOCUMENT_TRACEABLE (self), 0);
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if (addresses == NULL || n_addresses == 0)
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return 0;
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decoder = SYSPROF_DOCUMENT_TRACEABLE_GET_IFACE (self)->get_stack_address;
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n_addresses = MIN (n_addresses, sysprof_document_traceable_get_stack_depth (self));
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for (guint i = 0; i < n_addresses; i++)
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addresses[i] = decoder (self, i);
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return n_addresses;
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}
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