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ggml : add support for dynamic loading of backends (#10469)

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* ggml : add support for dynamic loading of backends

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Diego Devesa 2024-11-25 15:13:39 +01:00 • committed by GitHub
parent f6d12e7df8
commit 5931c1f233
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GPG key ID: B5690EEEBB952194
44 changed files with 728 additions and 272 deletions
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ggml/src/ggml-backend-impl.h
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@ -8,6 +8,8 @@
extern "C" {
#endif
#define GGML_BACKEND_API_VERSION 1
//
// Backend buffer type
//
@ -63,20 +65,20 @@ extern "C" {
enum ggml_backend_buffer_usage usage;
};
ggml_backend_buffer_t ggml_backend_buffer_init(
GGML_API ggml_backend_buffer_t ggml_backend_buffer_init(
ggml_backend_buffer_type_t buft,
struct ggml_backend_buffer_i iface,
void * context,
size_t size);
// do not use directly, use ggml_backend_tensor_copy instead
bool ggml_backend_buffer_copy_tensor(const struct ggml_tensor * src, struct ggml_tensor * dst);
GGML_API bool ggml_backend_buffer_copy_tensor(const struct ggml_tensor * src, struct ggml_tensor * dst);
// multi-buffer
// buffer that contains a collection of buffers
ggml_backend_buffer_t ggml_backend_multi_buffer_alloc_buffer(ggml_backend_buffer_t * buffers, size_t n_buffers);
bool ggml_backend_buffer_is_multi_buffer(ggml_backend_buffer_t buffer);
void ggml_backend_multi_buffer_set_usage(ggml_backend_buffer_t buffer, enum ggml_backend_buffer_usage usage);
GGML_API ggml_backend_buffer_t ggml_backend_multi_buffer_alloc_buffer(ggml_backend_buffer_t * buffers, size_t n_buffers);
GGML_API bool ggml_backend_buffer_is_multi_buffer(ggml_backend_buffer_t buffer);
GGML_API void ggml_backend_multi_buffer_set_usage(ggml_backend_buffer_t buffer, enum ggml_backend_buffer_usage usage);
//
// Backend (stream)
@ -199,17 +201,37 @@ extern "C" {
};
struct ggml_backend_reg {
// int api_version; // TODO: for dynamic loading
int api_version; // initialize to GGML_BACKEND_API_VERSION
struct ggml_backend_reg_i iface;
void * context;
};
// Internal backend registry API
void ggml_backend_register(ggml_backend_reg_t reg);
void ggml_backend_device_register(ggml_backend_dev_t device);
// TODO: backends can be loaded as a dynamic library, in which case it needs to export this function
// typedef ggml_backend_register_t * (*ggml_backend_init)(void);
GGML_API void ggml_backend_register(ggml_backend_reg_t reg);
GGML_API void ggml_backend_device_register(ggml_backend_dev_t device);
// Add backend dynamic loading support to the backend
typedef ggml_backend_reg_t (*ggml_backend_init_t)(void);
#ifdef GGML_BACKEND_DL
#ifdef __cplusplus
# define GGML_BACKEND_DL_IMPL(reg_fn) \
extern "C" { \
GGML_BACKEND_API ggml_backend_reg_t ggml_backend_init(void); \
} \
ggml_backend_reg_t ggml_backend_init(void) { \
return reg_fn(); \
}
#else
# define GGML_BACKEND_DL_IMPL(reg_fn) \
GGML_BACKEND_API ggml_backend_reg_t ggml_backend_init(void); \
ggml_backend_reg_t ggml_backend_init(void) { \
return reg_fn(); \
}
#endif
#else
# define GGML_BACKEND_DL_IMPL(reg_fn)
#endif
#ifdef __cplusplus
}