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libsysprof-analyze: automatically handle compressed streams

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If we want /proc/kallsyms and we discover /proc/kallsyms.gz, then use the
/proc/kallsyms.gz instead and transparently decompress it. Also, list the
file in sysprof_document_list_files() as /proc/kallsyms instead of
/proc/kallsyms.gz as that is really the intention (but mark the compressed
bit for decoding the chunks).
This commit is contained in:
Christian Hergert
2023-05-30 12:46:42 -07:00
parent 01091fe815
commit 1e8e1adb73
4 changed files with 48 additions and 29 deletions
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35
src/libsysprof-analyze/sysprof-kallsyms-symbolizer.c
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@ -191,10 +191,9 @@ sysprof_kallsyms_symbolizer_prepare_async (SysprofSymbolizer *symbolizer,
{
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;
GInputStream *base_stream;
g_assert (SYSPROF_IS_KALLSYMS_SYMBOLIZER (self));
g_assert (SYSPROF_IS_DOCUMENT (document));
@ -203,9 +202,12 @@ sysprof_kallsyms_symbolizer_prepare_async (SysprofSymbolizer *symbolizer,
task = g_task_new (self, cancellable, callback, user_data);
g_task_set_source_tag (task, sysprof_kallsyms_symbolizer_prepare_async);
if (self->stream == NULL)
base_stream = self->stream;
if (base_stream == NULL)
{
if (!(file = sysprof_document_lookup_file (document, "/proc/kallsyms.gz")))
if (!(file = sysprof_document_lookup_file (document, "/proc/kallsyms")))
{
g_task_return_new_error (task,
G_IO_ERROR,
@ -214,20 +216,15 @@ sysprof_kallsyms_symbolizer_prepare_async (SysprofSymbolizer *symbolizer,
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));
base_stream = input = sysprof_document_file_read (file);
}
g_task_set_task_data (task,
g_data_input_stream_new (input),
g_object_unref);
}
else
{
g_task_set_task_data (task,
g_steal_pointer (&self->stream),
g_object_unref);
}
g_assert (base_stream != NULL);
g_assert (G_IS_INPUT_STREAM (base_stream));
g_task_set_task_data (task,
g_data_input_stream_new (base_stream),
g_object_unref);
g_task_run_in_thread (task, sysprof_kallsyms_symbolizer_prepare_worker);
}
@ -364,9 +361,7 @@ sysprof_kallsyms_symbolizer_new_for_symbols (GInputStream *symbols)
g_return_val_if_fail (G_IS_INPUT_STREAM (symbols), NULL);
self = g_object_new (SYSPROF_TYPE_KALLSYMS_SYMBOLIZER, NULL);
self->stream = G_INPUT_STREAM (g_data_input_stream_new (symbols));
g_object_unref (symbols);
self->stream = symbols;
return SYSPROF_SYMBOLIZER (self);
}