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compiler/blob: Switch to init/finish instead of create/destroy

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There's no reason why that tiny bit of memory needs to be on the heap.
We always put blob_reader on the stack, so why not do the same with the
writable blob.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Jason Ekstrand
2017-10-11 09:44:33 -07:00
parent 0e3bd56c6e
commit 49bb9f785a
5 changed files with 80 additions and 87 deletions
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10
src/compiler/blob.c
View File

@@ -99,19 +99,13 @@ align_blob_reader(struct blob_reader *blob, size_t alignment)
blob->current = blob->data + ALIGN(blob->current - blob->data, alignment);
}
struct blob *
blob_create()
void
blob_init(struct blob *blob)
{
struct blob *blob = (struct blob *) malloc(sizeof(struct blob));
if (blob == NULL)
return NULL;
blob->data = NULL;
blob->allocated = 0;
blob->size = 0;
blob->out_of_memory = false;
return blob;
}
bool

13
src/compiler/blob.h
View File

@@ -79,21 +79,18 @@ struct blob_reader {
};
/**
* Create a new, empty blob.
*
* \return The new blob, (or NULL in case of allocation failure).
* Init a new, empty blob.
*/
struct blob *
blob_create(void);
void
blob_init(struct blob *blob);
/**
* Destroy a blob and free its memory.
* Finish a blob and free its memory.
*/
static inline void
blob_destroy(struct blob *blob)
blob_finish(struct blob *blob)
{
free(blob->data);
free(blob);
}
/**

39
src/compiler/glsl/shader_cache.cpp
View File

@@ -1356,52 +1356,53 @@ shader_cache_write_program_metadata(struct gl_context *ctx,
if (memcmp(prog->data->sha1, zero, sizeof(prog->data->sha1)) == 0)
return;
struct blob *metadata = blob_create();
struct blob metadata;
blob_init(&metadata);
write_uniforms(metadata, prog);
write_uniforms(&metadata, prog);
write_hash_tables(metadata, prog);
write_hash_tables(&metadata, prog);
blob_write_uint32(metadata, prog->data->Version);
blob_write_uint32(metadata, prog->data->linked_stages);
blob_write_uint32(&metadata, prog->data->Version);
blob_write_uint32(&metadata, prog->data->linked_stages);
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
struct gl_linked_shader *sh = prog->_LinkedShaders[i];
if (sh) {
write_shader_metadata(metadata, sh);
write_shader_metadata(&metadata, sh);
if (sh->Program->info.name)
blob_write_string(metadata, sh->Program->info.name);
blob_write_string(&metadata, sh->Program->info.name);
else
blob_write_string(metadata, "");
blob_write_string(&metadata, "");
if (sh->Program->info.label)
blob_write_string(metadata, sh->Program->info.label);
blob_write_string(&metadata, sh->Program->info.label);
else
blob_write_string(metadata, "");
blob_write_string(&metadata, "");
size_t s_info_size, s_info_ptrs;
get_shader_info_and_pointer_sizes(&s_info_size, &s_info_ptrs,
&sh->Program->info);
/* Store shader info */
blob_write_bytes(metadata,
blob_write_bytes(&metadata,
((char *) &sh->Program->info) + s_info_ptrs,
s_info_size - s_info_ptrs);
}
}
write_xfb(metadata, prog);
write_xfb(&metadata, prog);
write_uniform_remap_tables(metadata, prog);
write_uniform_remap_tables(&metadata, prog);
write_atomic_buffers(metadata, prog);
write_atomic_buffers(&metadata, prog);
write_buffer_blocks(metadata, prog);
write_buffer_blocks(&metadata, prog);
write_subroutines(metadata, prog);
write_subroutines(&metadata, prog);
write_program_resource_list(metadata, prog);
write_program_resource_list(&metadata, prog);
struct cache_item_metadata cache_item_metadata;
cache_item_metadata.type = CACHE_ITEM_TYPE_GLSL;
@@ -1423,7 +1424,7 @@ shader_cache_write_program_metadata(struct gl_context *ctx,
}
}
disk_cache_put(cache, prog->data->sha1, metadata->data, metadata->size,
disk_cache_put(cache, prog->data->sha1, metadata.data, metadata.size,
&cache_item_metadata);
if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
@@ -1433,7 +1434,7 @@ shader_cache_write_program_metadata(struct gl_context *ctx,
fail:
free(cache_item_metadata.keys);
blob_destroy(metadata);
blob_finish(&metadata);
}
bool

82
src/compiler/glsl/tests/blob_test.c
View File

@@ -118,44 +118,44 @@ expect_equal_bytes(uint8_t *expected, uint8_t *actual,
static void
test_write_and_read_functions (void)
{
struct blob *blob;
struct blob blob;
struct blob_reader reader;
uint8_t *reserved;
size_t str_offset, uint_offset;
uint8_t reserve_buf[sizeof(reserve_test_str)];
blob = blob_create();
blob_init(&blob);
/*** Test blob by writing one of every possible kind of value. */
blob_write_bytes(blob, bytes_test_str, sizeof(bytes_test_str));
blob_write_bytes(&blob, bytes_test_str, sizeof(bytes_test_str));
reserved = blob_reserve_bytes(blob, sizeof(reserve_test_str));
reserved = blob_reserve_bytes(&blob, sizeof(reserve_test_str));
memcpy(reserved, reserve_test_str, sizeof(reserve_test_str));
/* Write a placeholder, (to be replaced later via overwrite_bytes) */
str_offset = blob->size;
blob_write_bytes(blob, placeholder_str, sizeof(placeholder_str));
str_offset = blob.size;
blob_write_bytes(&blob, placeholder_str, sizeof(placeholder_str));
blob_write_uint32(blob, uint32_test);
blob_write_uint32(&blob, uint32_test);
/* Write a placeholder, (to be replaced later via overwrite_uint32) */
uint_offset = blob->size;
blob_write_uint32(blob, uint32_placeholder);
uint_offset = blob.size;
blob_write_uint32(&blob, uint32_placeholder);
blob_write_uint64(blob, uint64_test);
blob_write_uint64(&blob, uint64_test);
blob_write_intptr(blob, (intptr_t) blob);
blob_write_intptr(&blob, (intptr_t) &blob);
blob_write_string(blob, string_test_str);
blob_write_string(&blob, string_test_str);
/* Finally, overwrite our placeholders. */
blob_overwrite_bytes(blob, str_offset, overwrite_test_str,
blob_overwrite_bytes(&blob, str_offset, overwrite_test_str,
sizeof(overwrite_test_str));
blob_overwrite_uint32(blob, uint_offset, uint32_overwrite);
blob_overwrite_uint32(&blob, uint_offset, uint32_overwrite);
/*** Now read each value and verify. */
blob_reader_init(&reader, blob->data, blob->size);
blob_reader_init(&reader, blob.data, blob.size);
expect_equal_str(bytes_test_str,
blob_read_bytes(&reader, sizeof(bytes_test_str)),
@@ -175,7 +175,7 @@ test_write_and_read_functions (void)
"blob_overwrite_uint32");
expect_equal(uint64_test, blob_read_uint64(&reader),
"blob_write/read_uint64");
expect_equal((intptr_t) blob, blob_read_intptr(&reader),
expect_equal((intptr_t) &blob, blob_read_intptr(&reader),
"blob_write/read_intptr");
expect_equal_str(string_test_str, blob_read_string(&reader),
"blob_write/read_string");
@@ -184,28 +184,28 @@ test_write_and_read_functions (void)
"read_consumes_all_bytes");
expect_equal(false, reader.overrun, "read_does_not_overrun");
blob_destroy(blob);
blob_finish(&blob);
}
/* Test that data values are written and read with proper alignment. */
static void
test_alignment(void)
{
struct blob *blob;
struct blob blob;
struct blob_reader reader;
uint8_t bytes[] = "ABCDEFGHIJKLMNOP";
size_t delta, last, num_bytes;
blob = blob_create();
blob_init(&blob);
/* First, write an intptr value to the blob and capture that size. This is
* the expected offset between any pair of intptr values (if written with
* alignment).
*/
blob_write_intptr(blob, (intptr_t) blob);
blob_write_intptr(&blob, (intptr_t) &blob);
delta = blob->size;
last = blob->size;
delta = blob.size;
last = blob.size;
/* Then loop doing the following:
*
@@ -215,56 +215,56 @@ test_alignment(void)
* 2. Verify that that write results in an aligned size
*/
for (num_bytes = 1; num_bytes < sizeof(intptr_t); num_bytes++) {
blob_write_bytes(blob, bytes, num_bytes);
blob_write_bytes(&blob, bytes, num_bytes);
expect_unequal(delta, blob->size - last, "unaligned write of bytes");
expect_unequal(delta, blob.size - last, "unaligned write of bytes");
blob_write_intptr(blob, (intptr_t) blob);
blob_write_intptr(&blob, (intptr_t) &blob);
expect_equal(2 * delta, blob->size - last, "aligned write of intptr");
expect_equal(2 * delta, blob.size - last, "aligned write of intptr");
last = blob->size;
last = blob.size;
}
/* Finally, test that reading also does proper alignment. Since we know
* that values were written with all the right alignment, all we have to do
* here is verify that correct values are read.
*/
blob_reader_init(&reader, blob->data, blob->size);
blob_reader_init(&reader, blob.data, blob.size);
expect_equal((intptr_t) blob, blob_read_intptr(&reader),
expect_equal((intptr_t) &blob, blob_read_intptr(&reader),
"read of initial, aligned intptr_t");
for (num_bytes = 1; num_bytes < sizeof(intptr_t); num_bytes++) {
expect_equal_bytes(bytes, blob_read_bytes(&reader, num_bytes),
num_bytes, "unaligned read of bytes");
expect_equal((intptr_t) blob, blob_read_intptr(&reader),
expect_equal((intptr_t) &blob, blob_read_intptr(&reader),
"aligned read of intptr_t");
}
blob_destroy(blob);
blob_finish(&blob);
}
/* Test that we detect overrun. */
static void
test_overrun(void)
{
struct blob *blob;
struct blob blob;
struct blob_reader reader;
uint32_t value = 0xdeadbeef;
blob = blob_create();
blob_init(&blob);
blob_write_uint32(blob, value);
blob_write_uint32(&blob, value);
blob_reader_init(&reader, blob->data, blob->size);
blob_reader_init(&reader, blob.data, blob.size);
expect_equal(value, blob_read_uint32(&reader), "read before overrun");
expect_equal(false, reader.overrun, "overrun flag not set");
expect_equal(0, blob_read_uint32(&reader), "read at overrun");
expect_equal(true, reader.overrun, "overrun flag set");
blob_destroy(blob);
blob_finish(&blob);
}
/* Test that we can read and write some large objects, (exercising the code in
@@ -274,14 +274,14 @@ static void
test_big_objects(void)
{
void *ctx = ralloc_context(NULL);
struct blob *blob;
struct blob blob;
struct blob_reader reader;
int size = 1000;
int count = 1000;
size_t i;
char *buf;
blob = blob_create();
blob_init(&blob);
/* Initialize our buffer. */
buf = ralloc_size(ctx, size);
@@ -291,10 +291,10 @@ test_big_objects(void)
/* Write it many times. */
for (i = 0; i < count; i++) {
blob_write_bytes(blob, buf, size);
blob_write_bytes(&blob, buf, size);
}
blob_reader_init(&reader, blob->data, blob->size);
blob_reader_init(&reader, blob.data, blob.size);
/* Read and verify it many times. */
for (i = 0; i < count; i++) {
@@ -308,7 +308,7 @@ test_big_objects(void)
expect_equal(false, reader.overrun,
"overrun flag not set reading large objects");
blob_destroy(blob);
blob_finish(&blob);
ralloc_free(ctx);
}

23
src/mesa/state_tracker/st_shader_cache.c
View File

@@ -69,21 +69,22 @@ st_store_tgsi_in_disk_cache(struct st_context *st, struct gl_program *prog,
return;
unsigned char *sha1;
struct blob *blob = blob_create();
struct blob blob;
blob_init(&blob);
switch (prog->info.stage) {
case MESA_SHADER_VERTEX: {
struct st_vertex_program *stvp = (struct st_vertex_program *) prog;
sha1 = stvp->sha1;
blob_write_uint32(blob, stvp->num_inputs);
blob_write_bytes(blob, stvp->index_to_input,
blob_write_uint32(&blob, stvp->num_inputs);
blob_write_bytes(&blob, stvp->index_to_input,
sizeof(stvp->index_to_input));
blob_write_bytes(blob, stvp->result_to_output,
blob_write_bytes(&blob, stvp->result_to_output,
sizeof(stvp->result_to_output));
write_stream_out_to_cache(blob, &stvp->tgsi);
write_tgsi_to_cache(blob, &stvp->tgsi, st, sha1, num_tokens);
write_stream_out_to_cache(&blob, &stvp->tgsi);
write_tgsi_to_cache(&blob, &stvp->tgsi, st, sha1, num_tokens);
break;
}
case MESA_SHADER_TESS_CTRL:
@@ -92,22 +93,22 @@ st_store_tgsi_in_disk_cache(struct st_context *st, struct gl_program *prog,
struct st_common_program *p = st_common_program(prog);
sha1 = p->sha1;
write_stream_out_to_cache(blob, out_state);
write_tgsi_to_cache(blob, out_state, st, sha1, num_tokens);
write_stream_out_to_cache(&blob, out_state);
write_tgsi_to_cache(&blob, out_state, st, sha1, num_tokens);
break;
}
case MESA_SHADER_FRAGMENT: {
struct st_fragment_program *stfp = (struct st_fragment_program *) prog;
sha1 = stfp->sha1;
write_tgsi_to_cache(blob, &stfp->tgsi, st, sha1, num_tokens);
write_tgsi_to_cache(&blob, &stfp->tgsi, st, sha1, num_tokens);
break;
}
case MESA_SHADER_COMPUTE: {
struct st_compute_program *stcp = (struct st_compute_program *) prog;
sha1 = stcp->sha1;
write_tgsi_to_cache(blob, out_state, st, sha1, num_tokens);
write_tgsi_to_cache(&blob, out_state, st, sha1, num_tokens);
break;
}
default:
@@ -121,7 +122,7 @@ st_store_tgsi_in_disk_cache(struct st_context *st, struct gl_program *prog,
_mesa_shader_stage_to_string(prog->info.stage), sha1_buf);
}
blob_destroy(blob);
blob_finish(&blob);
}
static void