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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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21
src/libsysprof-analyze/sysprof-document.c
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@ -895,14 +895,19 @@ SysprofDocumentFile *
sysprof_document_lookup_file (SysprofDocument *self,
const char *path)
{
g_autofree char *gz_path = NULL;
gpointer key, value;
g_return_val_if_fail (SYSPROF_IS_DOCUMENT (self), NULL);
g_return_val_if_fail (path != NULL, NULL);
if (g_hash_table_lookup_extended (self->files_first_position, path, &key, &value))
gz_path = g_strdup_printf ("%s.gz", path);
if (g_hash_table_lookup_extended (self->files_first_position, path, &key, &value) ||
g_hash_table_lookup_extended (self->files_first_position, gz_path, &key, &value))
{
g_autoptr(GPtrArray) file_chunks = g_ptr_array_new_with_free_func (g_object_unref);
const char *real_path = key;
EggBitsetIter iter;
guint target = GPOINTER_TO_SIZE (value);
guint i;
@ -913,7 +918,7 @@ sysprof_document_lookup_file (SysprofDocument *self,
{
g_autoptr(SysprofDocumentFileChunk) file_chunk = sysprof_document_get_item ((GListModel *)self, i);
if (g_strcmp0 (path, sysprof_document_file_chunk_get_path (file_chunk)) == 0)
if (g_strcmp0 (real_path, sysprof_document_file_chunk_get_path (file_chunk)) == 0)
{
gboolean is_last = sysprof_document_file_chunk_get_is_last (file_chunk);
@ -926,7 +931,9 @@ sysprof_document_lookup_file (SysprofDocument *self,
while (egg_bitset_iter_next (&iter, &i));
}
return _sysprof_document_file_new (path, g_steal_pointer (&file_chunks));
return _sysprof_document_file_new (path,
g_steal_pointer (&file_chunks),
g_strcmp0 (real_path, gz_path) == 0);
}
return NULL;
@ -957,6 +964,7 @@ sysprof_document_list_files (SysprofDocument *self)
{
g_autoptr(SysprofDocumentFile) file = NULL;
g_autoptr(GPtrArray) file_chunks = g_ptr_array_new_with_free_func (g_object_unref);
g_autofree char *no_gz_path = NULL;
const char *path = key;
guint target = GPOINTER_TO_SIZE (value);
guint i;
@ -980,7 +988,12 @@ sysprof_document_list_files (SysprofDocument *self)
while (egg_bitset_iter_next (&iter, &i));
}
file = _sysprof_document_file_new (path, g_steal_pointer (&file_chunks));
if (g_str_has_suffix (path, ".gz"))
path = no_gz_path = g_strndup (path, strlen (path) - 3);
file = _sysprof_document_file_new (path,
g_steal_pointer (&file_chunks),
no_gz_path != NULL);
g_list_store_append (model, file);
}