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util/disk_cache: allow drivers to pass a directory structure

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In order to avoid costly fallback recompiles when cache items are
created with an old version of Mesa or for a different gpu on the
same system we want to create directories that look like this:

./{TIMESTAMP}_{LLVM_TIMESTAMP}/{GPU_ID}

Note: The disk cache util will take a single timestamp string, it is
up to the backend to concatenate the llvm string with the mesa string
if applicable.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Timothy Arceri
2017-02-06 12:56:08 +11:00
parent 87009681a5
commit 3342ce452c
3 changed files with 36 additions and 16 deletions
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28
src/util/disk_cache.c
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@@ -115,7 +115,7 @@ mkdir_if_needed(char *path)
* <path>/<name> cannot be created as a directory
*/
static char *
concatenate_and_mkdir(void *ctx, char *path, char *name)
concatenate_and_mkdir(void *ctx, char *path, const char *name)
{
char *new_path;
struct stat sb;
@@ -131,8 +131,27 @@ concatenate_and_mkdir(void *ctx, char *path, char *name)
return NULL;
}
static char *
create_mesa_cache_dir(void *mem_ctx, char *path, const char *timestamp,
const char *gpu_name)
{
char *new_path = concatenate_and_mkdir(mem_ctx, path, "mesa");
if (new_path == NULL)
return NULL;
new_path = concatenate_and_mkdir(mem_ctx, new_path, timestamp);
if (new_path == NULL)
return NULL;
new_path = concatenate_and_mkdir(mem_ctx, new_path, gpu_name);
if (new_path == NULL)
return NULL;
return new_path;
}
struct disk_cache *
disk_cache_create(void)
disk_cache_create(const char *gpu_name, const char *timestamp)
{
void *local;
struct disk_cache *cache = NULL;
@@ -176,7 +195,8 @@ disk_cache_create(void)
if (mkdir_if_needed(xdg_cache_home) == -1)
goto fail;
path = concatenate_and_mkdir(local, xdg_cache_home, "mesa");
path = create_mesa_cache_dir(local, xdg_cache_home, timestamp,
gpu_name);
if (path == NULL)
goto fail;
}
@@ -212,7 +232,7 @@ disk_cache_create(void)
if (path == NULL)
goto fail;
path = concatenate_and_mkdir(local, path, "mesa");
path = create_mesa_cache_dir(local, path, timestamp, gpu_name);
if (path == NULL)
goto fail;
}