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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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18
src/libsysprof-analyze/sysprof-document-file.c
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@ -26,9 +26,10 @@
struct _SysprofDocumentFile
{
GObject parent_instance;
char *path;
GObject parent_instance;
char *path;
GPtrArray *file_chunks;
guint compressed : 1;
};
enum {
@ -104,7 +105,8 @@ sysprof_document_file_init (SysprofDocumentFile *self)
SysprofDocumentFile *
_sysprof_document_file_new (const char *path,
GPtrArray *file_chunks)
GPtrArray *file_chunks,
gboolean compressed)
{
SysprofDocumentFile *self;
@ -114,6 +116,7 @@ _sysprof_document_file_new (const char *path,
self = g_object_new (SYSPROF_TYPE_DOCUMENT_FILE, NULL);
self->path = g_strdup (path);
self->file_chunks = file_chunks;
self->compressed = !!compressed;
return self;
}
@ -169,7 +172,7 @@ sysprof_document_file_dup_bytes (SysprofDocumentFile *self)
GInputStream *
sysprof_document_file_read (SysprofDocumentFile *self)
{
GInputStream *input;
g_autoptr(GInputStream) input = NULL;
g_return_val_if_fail (SYSPROF_IS_DOCUMENT_FILE (self), NULL);
@ -193,6 +196,13 @@ sysprof_document_file_read (SysprofDocumentFile *self)
g_memory_input_stream_add_bytes (G_MEMORY_INPUT_STREAM (input), bytes);
}
if (self->compressed)
{
g_autoptr(GZlibDecompressor) zlib = g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP);
return g_converter_input_stream_new (input, G_CONVERTER (zlib));
}
return g_steal_pointer (&input);
}