diff --git a/src/libsysprof/meson.build b/src/libsysprof/meson.build index 09aed85d..3b9679c8 100644 --- a/src/libsysprof/meson.build +++ b/src/libsysprof/meson.build @@ -3,6 +3,7 @@ libsysprof_c_args = [ '-DSYSPROF_COMPILATION' ] libsysprof_public_sources = [ 'sysprof-callgraph-profile.c', 'sysprof-capture-gobject.c', + 'sysprof-capture-symbol-resolver.c', 'sysprof-elf-symbol-resolver.c', 'sysprof-hostinfo-source.c', 'sysprof-jitmap-symbol-resolver.c', @@ -25,6 +26,7 @@ libsysprof_public_sources = [ libsysprof_public_headers = [ 'sysprof-callgraph-profile.h', 'sysprof-capture-gobject.h', + 'sysprof-capture-symbol-resolver.h', 'sysprof-elf-symbol-resolver.h', 'sysprof-hostinfo-source.h', 'sysprof-jitmap-symbol-resolver.h', diff --git a/src/libsysprof/sysprof-capture-symbol-resolver.c b/src/libsysprof/sysprof-capture-symbol-resolver.c new file mode 100644 index 00000000..d4e45122 --- /dev/null +++ b/src/libsysprof/sysprof-capture-symbol-resolver.c @@ -0,0 +1,135 @@ +/* sysprof-capture-symbol-resolver.c + * + * Copyright 2019 Christian Hergert + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#define G_LOG_DOMAIN "sysprof-capture-symbol-resolver" + +#include "config.h" + +#include + +#include "sysprof-capture-symbol-resolver.h" +#include "sysprof-platform.h" +#include "sysprof-private.h" +#include "sysprof-symbol-map.h" + +/** + * SECTION:sysprof-capture-symbol-resolver: + * @title: SysprofCaptureSymbolResolver + * @short_description: resolve symbols from embedded data within the capture + * + * This looks for an embedded file "__symbols__" in the capture and tries to + * decode them using the data stored within that file. + * + * This is useful when moving capture files between machines as it will allow + * the viewer machine to get access to the symbols without having to copy them + * to the local system. + * + * Since: 3.34 + */ + +struct _SysprofCaptureSymbolResolver +{ + GObject parent_instance; + SysprofSymbolMap *map; +}; + +static void symbol_resolver_iface_init (SysprofSymbolResolverInterface *iface); + +G_DEFINE_TYPE_WITH_CODE (SysprofCaptureSymbolResolver, sysprof_capture_symbol_resolver, G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE (SYSPROF_TYPE_SYMBOL_RESOLVER, symbol_resolver_iface_init)) + +static void +sysprof_capture_symbol_resolver_finalize (GObject *object) +{ + SysprofCaptureSymbolResolver *self = (SysprofCaptureSymbolResolver *)object; + + g_clear_pointer (&self->map, sysprof_symbol_map_free); + + G_OBJECT_CLASS (sysprof_capture_symbol_resolver_parent_class)->finalize (object); +} + +static void +sysprof_capture_symbol_resolver_class_init (SysprofCaptureSymbolResolverClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = sysprof_capture_symbol_resolver_finalize; +} + +static void +sysprof_capture_symbol_resolver_init (SysprofCaptureSymbolResolver *self) +{ + self->map = sysprof_symbol_map_new (); +} + +SysprofSymbolResolver * +sysprof_capture_symbol_resolver_new (void) +{ + return g_object_new (SYSPROF_TYPE_CAPTURE_SYMBOL_RESOLVER, NULL); +} + +static void +sysprof_capture_symbol_resolver_load (SysprofSymbolResolver *resolver, + SysprofCaptureReader *reader) +{ + SysprofCaptureSymbolResolver *self = (SysprofCaptureSymbolResolver *)resolver; + g_autoptr(GError) error = NULL; + gint byte_order; + gint fd; + + g_assert (SYSPROF_IS_CAPTURE_SYMBOL_RESOLVER (self)); + g_assert (reader != NULL); + + byte_order = sysprof_capture_reader_get_byte_order (reader); + + if (-1 == (fd = sysprof_memfd_create ("[symbol-decoder]"))) + return; + + if (sysprof_capture_reader_read_file_fd (reader, "__symbols__", fd)) + sysprof_symbol_map_deserialize (self->map, byte_order, fd); + + close (fd); +} + +gchar * +sysprof_capture_symbol_resolver_resolve_with_context (SysprofSymbolResolver *resolver, + guint64 time, + GPid pid, + SysprofAddressContext context, + SysprofCaptureAddress address, + GQuark *tag) +{ + SysprofCaptureSymbolResolver *self = (SysprofCaptureSymbolResolver *)resolver; + const gchar *name; + + g_assert (SYSPROF_IS_CAPTURE_SYMBOL_RESOLVER (self)); + + if ((name = sysprof_symbol_map_lookup (self->map, time, pid, address, tag))) + return g_strdup (name); + + return NULL; +} + +static void +symbol_resolver_iface_init (SysprofSymbolResolverInterface *iface) +{ + iface->load = sysprof_capture_symbol_resolver_load; + iface->resolve_with_context = sysprof_capture_symbol_resolver_resolve_with_context; +} diff --git a/src/libsysprof/sysprof-capture-symbol-resolver.h b/src/libsysprof/sysprof-capture-symbol-resolver.h new file mode 100644 index 00000000..2f6583af --- /dev/null +++ b/src/libsysprof/sysprof-capture-symbol-resolver.h @@ -0,0 +1,33 @@ +/* sysprof-capture-symbol-resolver.h + * + * Copyright 2019 Christian Hergert + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#pragma once + +#include "sysprof-symbol-resolver.h" + +G_BEGIN_DECLS + +#define SYSPROF_TYPE_CAPTURE_SYMBOL_RESOLVER (sysprof_capture_symbol_resolver_get_type()) + +G_DECLARE_FINAL_TYPE (SysprofCaptureSymbolResolver, sysprof_capture_symbol_resolver, SYSPROF, CAPTURE_SYMBOL_RESOLVER, GObject) + +SysprofSymbolResolver *sysprof_capture_symbol_resolver_new (void); + +G_END_DECLS diff --git a/src/libsysprof/sysprof.h b/src/libsysprof/sysprof.h index a124707f..669b6e39 100644 --- a/src/libsysprof/sysprof.h +++ b/src/libsysprof/sysprof.h @@ -26,6 +26,7 @@ G_BEGIN_DECLS # include "sysprof-callgraph-profile.h" # include "sysprof-capture-gobject.h" +# include "sysprof-capture-symbol-resolver.h" # include "sysprof-elf-symbol-resolver.h" # include "sysprof-jitmap-symbol-resolver.h" # include "sysprof-kernel-symbol-resolver.h"