From a27f700c0683b9b9cca7c269e2f20a87e01cdd85 Mon Sep 17 00:00:00 2001 From: Christian Hergert Date: Sun, 14 May 2023 18:45:03 -0700 Subject: [PATCH] libsysprof-analyze: add scaffolding for kallsyms parsing We will want to start embedding this content in the capture file (but after gzipping it as it's otherwise quite large). This will get things in place so that we can parse that .gz file into the address ranges and decode symbols found within the capture file. --- src/libsysprof-analyze/meson.build | 2 + src/libsysprof-analyze/sysprof-analyze.h | 1 + .../sysprof-kallsyms-symbolizer.c | 155 ++++++++++++++++++ .../sysprof-kallsyms-symbolizer.h | 42 +++++ 4 files changed, 200 insertions(+) create mode 100644 src/libsysprof-analyze/sysprof-kallsyms-symbolizer.c create mode 100644 src/libsysprof-analyze/sysprof-kallsyms-symbolizer.h diff --git a/src/libsysprof-analyze/meson.build b/src/libsysprof-analyze/meson.build index 4edb988a..f19e88fe 100644 --- a/src/libsysprof-analyze/meson.build +++ b/src/libsysprof-analyze/meson.build @@ -16,6 +16,7 @@ libsysprof_analyze_public_sources = [ 'sysprof-document-sample.c', 'sysprof-document-symbols.c', 'sysprof-document-traceable.c', + 'sysprof-kallsyms-symbolizer.c', 'sysprof-multi-symbolizer.c', 'sysprof-symbol.c', 'sysprof-symbolizer.c', @@ -52,6 +53,7 @@ libsysprof_analyze_public_headers = [ 'sysprof-document-symbols.h', 'sysprof-document-traceable.h', 'sysprof-mount.h', + 'sysprof-kallsyms-symbolizer.h', 'sysprof-multi-symbolizer.h', 'sysprof-symbol.h', 'sysprof-symbolizer.h', diff --git a/src/libsysprof-analyze/sysprof-analyze.h b/src/libsysprof-analyze/sysprof-analyze.h index a72e193a..f81102e4 100644 --- a/src/libsysprof-analyze/sysprof-analyze.h +++ b/src/libsysprof-analyze/sysprof-analyze.h @@ -43,6 +43,7 @@ G_BEGIN_DECLS # include "sysprof-document-symbols.h" # include "sysprof-document-traceable.h" # include "sysprof-mount.h" +# include "sysprof-kallsyms-symbolizer.h" # include "sysprof-multi-symbolizer.h" # include "sysprof-symbol.h" # include "sysprof-symbolizer.h" diff --git a/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.c b/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.c new file mode 100644 index 00000000..e2d6dd4f --- /dev/null +++ b/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.c @@ -0,0 +1,155 @@ +/* sysprof-kallsyms-symbolizer.c + * + * Copyright 2023 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 + */ + +#include "config.h" + +#include "sysprof-kallsyms-symbolizer.h" +#include "sysprof-document-private.h" +#include "sysprof-symbolizer-private.h" +#include "sysprof-symbol-private.h" + +struct _SysprofKallsymsSymbolizer +{ + SysprofSymbolizer parent_instance; +}; + +struct _SysprofKallsymsSymbolizerClass +{ + SysprofSymbolizerClass parent_class; +}; + +G_DEFINE_FINAL_TYPE (SysprofKallsymsSymbolizer, sysprof_kallsyms_symbolizer, SYSPROF_TYPE_SYMBOLIZER) + +static void +sysprof_kallsyms_symbolizer_prepare_worker (GTask *task, + gpointer source_object, + gpointer task_data, + GCancellable *cancellable) +{ + SysprofKallsymsSymbolizer *self = source_object; + GDataInputStream *input = task_data; + g_autoptr(GError) error = NULL; + char *line; + gsize len; + + g_assert (G_IS_TASK (task)); + g_assert (SYSPROF_IS_KALLSYMS_SYMBOLIZER (self)); + g_assert (G_IS_DATA_INPUT_STREAM (input)); + + while ((line = g_data_input_stream_read_line_utf8 (input, &len, cancellable, &error))) + { + /* TODO: port kallsym parser from sysprof-kallsyms.c */ + + g_free (line); + } + + g_task_return_boolean (task, TRUE); +} + +static void +sysprof_kallsyms_symbolizer_prepare_async (SysprofSymbolizer *symbolizer, + SysprofDocument *document, + GCancellable *cancellable, + GAsyncReadyCallback callback, + gpointer user_data) +{ + SysprofKallsymsSymbolizer *self = (SysprofKallsymsSymbolizer *)symbolizer; + g_autoptr(SysprofDocumentFile) file = NULL; + g_autoptr(GZlibDecompressor) decompressor = NULL; + g_autoptr(GInputStream) input_gz = NULL; + g_autoptr(GInputStream) input = NULL; + g_autoptr(GTask) task = NULL; + + g_assert (SYSPROF_IS_KALLSYMS_SYMBOLIZER (self)); + g_assert (SYSPROF_IS_DOCUMENT (document)); + g_assert (!cancellable || G_IS_CANCELLABLE (cancellable)); + + task = g_task_new (self, cancellable, callback, user_data); + g_task_set_source_tag (task, sysprof_kallsyms_symbolizer_prepare_async); + + if (!(file = sysprof_document_lookup_file (document, "/proc/kallsyms.gz"))) + { + g_task_return_new_error (task, + G_IO_ERROR, + G_IO_ERROR_NOT_SUPPORTED, + "No kallsyms found to decode"); + return; + } + + decompressor = g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP); + input_gz = sysprof_document_file_read (file); + input = g_converter_input_stream_new (input_gz, G_CONVERTER (decompressor)); + + g_task_set_task_data (task, + g_data_input_stream_new (input), + g_object_unref); + g_task_run_in_thread (task, sysprof_kallsyms_symbolizer_prepare_worker); +} + +static gboolean +sysprof_kallsyms_symbolizer_prepare_finish (SysprofSymbolizer *symbolizer, + GAsyncResult *result, + GError **error) +{ + g_assert (SYSPROF_IS_KALLSYMS_SYMBOLIZER (symbolizer)); + g_assert (G_IS_TASK (result)); + g_assert (g_task_is_valid (result, symbolizer)); + + return g_task_propagate_boolean (G_TASK (result), error); +} + +static SysprofSymbol * +sysprof_kallsyms_symbolizer_symbolize (SysprofSymbolizer *symbolizer, + SysprofStrings *strings, + const SysprofProcessInfo *process_info, + SysprofAddress address) +{ + return NULL; +} + +static void +sysprof_kallsyms_symbolizer_finalize (GObject *object) +{ + G_OBJECT_CLASS (sysprof_kallsyms_symbolizer_parent_class)->finalize (object); +} + +static void +sysprof_kallsyms_symbolizer_class_init (SysprofKallsymsSymbolizerClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + SysprofSymbolizerClass *symbolizer_class = SYSPROF_SYMBOLIZER_CLASS (klass); + + object_class->finalize = sysprof_kallsyms_symbolizer_finalize; + + symbolizer_class->prepare_async = sysprof_kallsyms_symbolizer_prepare_async; + symbolizer_class->prepare_finish = sysprof_kallsyms_symbolizer_prepare_finish; + symbolizer_class->symbolize = sysprof_kallsyms_symbolizer_symbolize; +} + +static void +sysprof_kallsyms_symbolizer_init (SysprofKallsymsSymbolizer *self) +{ +} + +SysprofSymbolizer * +sysprof_kallsyms_symbolizer_new (void) +{ + return g_object_new (SYSPROF_TYPE_KALLSYMS_SYMBOLIZER, NULL); +} diff --git a/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.h b/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.h new file mode 100644 index 00000000..9a766326 --- /dev/null +++ b/src/libsysprof-analyze/sysprof-kallsyms-symbolizer.h @@ -0,0 +1,42 @@ +/* sysprof-kallsyms-symbolizer.h + * + * Copyright 2023 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-symbolizer.h" + +G_BEGIN_DECLS + +#define SYSPROF_TYPE_KALLSYMS_SYMBOLIZER (sysprof_kallsyms_symbolizer_get_type()) +#define SYSPROF_IS_KALLSYMS_SYMBOLIZER(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, SYSPROF_TYPE_KALLSYMS_SYMBOLIZER) +#define SYSPROF_KALLSYMS_SYMBOLIZER(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, SYSPROF_TYPE_KALLSYMS_SYMBOLIZER, SysprofKallsymsSymbolizer) +#define SYSPROF_KALLSYMS_SYMBOLIZER_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, SYSPROF_TYPE_KALLSYMS_SYMBOLIZER, SysprofKallsymsSymbolizerClass) + +typedef struct _SysprofKallsymsSymbolizer SysprofKallsymsSymbolizer; +typedef struct _SysprofKallsymsSymbolizerClass SysprofKallsymsSymbolizerClass; + +SYSPROF_AVAILABLE_IN_ALL +GType sysprof_kallsyms_symbolizer_get_type (void) G_GNUC_CONST; +SYSPROF_AVAILABLE_IN_ALL +SysprofSymbolizer *sysprof_kallsyms_symbolizer_new (void); + +G_DEFINE_AUTOPTR_CLEANUP_FUNC (SysprofKallsymsSymbolizer, g_object_unref) + +G_END_DECLS