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#include "ggml-impl.h"
#include <cassert>
#include <cstring>
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
struct apir_encoder {
char * cur;
const char * start;
const char * end;
bool fatal;
};
struct apir_decoder {
const char * cur;
const char * end;
bool fatal;
};
/*
* new encoder and decoder
*/
static apir_decoder apir_new_decoder(const char * ptr, size_t size) {
apir_decoder dec = {
.cur = ptr,
.end = ptr + size,
.fatal = false,
};
return dec;
}
static apir_encoder apir_new_encoder(char * ptr, size_t size) {
apir_encoder enc = {
.cur = ptr,
.start = ptr,
.end = ptr + size,
.fatal = false,
};
return enc;
}
/*
* fatal flag handling
*/
static inline void apir_encoder_reset_fatal(apir_encoder * enc) {
enc->fatal = false;
}
static inline void apir_encoder_set_fatal(apir_encoder * enc) {
enc->fatal = true;
}
static inline bool apir_encoder_get_fatal(const apir_encoder * enc) {
return enc->fatal;
}
static inline void apir_decoder_reset_fatal(apir_decoder * dec) {
dec->fatal = false;
}
static inline void apir_decoder_set_fatal(apir_decoder * dec) {
dec->fatal = true;
}
static inline bool apir_decoder_get_fatal(const apir_decoder * dec) {
return dec->fatal;
}
/*
* encode peek
*/
static inline bool apir_decoder_peek_internal(apir_decoder * dec, size_t size, void * val, size_t val_size) {
assert(val_size <= size);
if (unlikely(size > (size_t) (dec->end - dec->cur))) {
GGML_LOG_ERROR("%s: reading too much from the decoder ...\n", __func__);
apir_decoder_set_fatal(dec);
memset(val, 0, val_size);
return false;
}
/* we should not rely on the compiler to optimize away memcpy... */
memcpy(val, dec->cur, val_size);
return true;
}
static inline void apir_decoder_peek(apir_decoder * dec, size_t size, void * val, size_t val_size) {
apir_decoder_peek_internal(dec, size, val, val_size);
}
static inline const void * apir_decoder_use_inplace(apir_decoder * dec, size_t size) {
if (unlikely(size > (size_t) (dec->end - dec->cur))) {
GGML_LOG_ERROR("%s: reading too much from the decoder ...\n", __func__);
apir_decoder_set_fatal(dec);
return NULL;
}
const void * addr = dec->cur;
dec->cur += size;
return addr;
}
/*
* read/write
*/
static inline void apir_decoder_read(apir_decoder * dec, size_t size, void * val, size_t val_size) {
if (apir_decoder_peek_internal(dec, size, val, val_size)) {
dec->cur += size;
}
}
static inline char * apir_encoder_write(apir_encoder * enc, size_t size, const void * val, size_t val_size) {
assert(val_size <= size);
assert(size <= ((size_t) (enc->end - enc->cur)));
char * write_addr = enc->cur;
/* we should not rely on the compiler to optimize away memcpy... */
memcpy(write_addr, val, val_size);
enc->cur += size;
return write_addr;
}
/*
* encode/decode
*/
static inline void apir_decode(apir_decoder * dec, size_t size, void * data, size_t data_size) {
assert(size % 4 == 0);
apir_decoder_read(dec, size, data, data_size);
}
static inline void apir_encode(apir_encoder * enc, size_t size, const void * data, size_t data_size) {
assert(size % 4 == 0);
apir_encoder_write(enc, size, data, data_size);
}
/*
* typed encode/decode
*/
/* uint8_t */
static inline void apir_encode_uint8_t(apir_encoder * enc, const uint8_t * val) {
apir_encode(enc, sizeof(int), val, sizeof(*val));
}
static inline void apir_decode_uint8_t(apir_decoder * dec, uint8_t * val) {
apir_decode(dec, sizeof(int), val, sizeof(*val));
}
/* uint64_t */
static inline void apir_encode_uint64_t(apir_encoder * enc, const uint64_t * val) {
apir_encode(enc, 8, val, sizeof(*val));
}
static inline void apir_decode_uint64_t(apir_decoder * dec, uint64_t * val) {
apir_decode(dec, 8, val, sizeof(*val));
}
static inline void apir_encode_uint64_t_array(apir_encoder * enc, const uint64_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_encode(enc, size, val, size);
}
static inline void apir_decode_uint64_t_array(apir_decoder * dec, uint64_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_decode(dec, size, val, size);
}
static inline const uint64_t * apir_decode_uint64_t_array_inplace(apir_decoder * dec, uint32_t count) {
return (uint64_t *) (uintptr_t) apir_decoder_use_inplace(dec, count * sizeof(uint64_t));
}
/* int32_t */
static inline void apir_encode_int32_t(apir_encoder * enc, const int32_t * val) {
apir_encode(enc, 4, val, sizeof(*val));
}
static inline void apir_decode_int32_t(apir_decoder * dec, int32_t * val) {
apir_decode(dec, 4, val, sizeof(*val));
}
static inline void apir_encode_int32_t_array(apir_encoder * enc, const int32_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_encode(enc, size, val, size);
}
static inline void apir_decode_int32_t_array(apir_decoder * dec, int32_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_decode(dec, size, val, size);
}
/* array size (uint64_t) */
static inline void apir_encode_array_size(apir_encoder * enc, uint64_t size) {
apir_encode_uint64_t(enc, &size);
}
static inline uint64_t apir_decode_array_size(apir_decoder * dec, uint64_t expected_size) {
uint64_t size;
apir_decode_uint64_t(dec, &size);
if (size != expected_size) {
GGML_LOG_ERROR("%s: Couldn't decode array from the decoder\n", __func__);
apir_decoder_set_fatal(dec);
size = 0;
}
return size;
}
static inline uint64_t apir_decode_array_size_unchecked(apir_decoder * dec) {
uint64_t size;
apir_decode_uint64_t(dec, &size);
return size;
}
/* non-array pointer */
static inline bool apir_encode_simple_pointer(apir_encoder * enc, const void * val) {
apir_encode_array_size(enc, val ? 1 : 0);
return val;
}
static inline bool apir_decode_simple_pointer(apir_decoder * dec) {
return apir_decode_array_size_unchecked(dec);
}
/* uint32_t */
static inline void apir_encode_uint32_t(apir_encoder * enc, const uint32_t * val) {
apir_encode(enc, 4, val, sizeof(*val));
}
static inline void apir_decode_uint32_t(apir_decoder * dec, uint32_t * val) {
apir_decode(dec, 4, val, sizeof(*val));
}
static inline void apir_encode_uint32_t_array(apir_encoder * enc, const uint32_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_encode(enc, size, val, size);
}
static inline void apir_decode_uint32_t_array(apir_decoder * dec, uint32_t * val, uint32_t count) {
const size_t size = sizeof(*val) * count;
assert(size >= count);
apir_decode(dec, size, val, size);
}
/* size_t */
static inline void apir_encode_size_t(apir_encoder * enc, const size_t * val) {
const uint64_t tmp = *val;
apir_encode_uint64_t(enc, &tmp);
}
static inline void apir_decode_size_t(apir_decoder * dec, size_t * val) {
uint64_t tmp;
apir_decode_uint64_t(dec, &tmp);
*val = tmp;
}
static inline void apir_encode_size_t_array(apir_encoder * enc, const size_t * val, uint32_t count) {
if (sizeof(size_t) == sizeof(uint64_t)) {
apir_encode_uint64_t_array(enc, (const uint64_t *) val, count);
} else {
for (uint32_t i = 0; i < count; i++) {
apir_encode_size_t(enc, &val[i]);
}
}
}
static inline void apir_decode_size_t_array(apir_decoder * dec, size_t * val, uint32_t count) {
if (sizeof(size_t) == sizeof(uint64_t)) {
apir_decode_uint64_t_array(dec, (uint64_t *) val, count);
} else {
for (uint32_t i = 0; i < count; i++) {
apir_decode_size_t(dec, &val[i]);
}
}
}
/* opaque blob */
static inline void apir_encode_blob_array(apir_encoder * enc, const void * val, size_t size) {
apir_encode(enc, (size + 3) & ~3, val, size);
}
static inline void apir_decode_blob_array(apir_decoder * dec, void * val, size_t size) {
apir_decode(dec, (size + 3) & ~3, val, size);
}
/* string */
static inline void apir_encode_char_array(apir_encoder * enc, const char * val, size_t size) {
assert(size && strlen(val) < size);
apir_encode_blob_array(enc, val, size);
}
static inline void apir_decode_char_array(apir_decoder * dec, char * val, size_t size) {
apir_decode_blob_array(dec, val, size);
if (size) {
val[size - 1] = '\0';
} else {
GGML_LOG_ERROR("%s: Couldn't decode the blog array\n", __func__);
apir_decoder_set_fatal(dec);
}
}
/* (temp) buffer allocation */
static inline void * apir_decoder_alloc_array(size_t size, size_t count) {
size_t alloc_size;
if (unlikely(__builtin_mul_overflow(size, count, &alloc_size))) {
GGML_LOG_ERROR("%s: overflow in array allocation of %zu * %zu bytes\n", __func__, size, count);
return NULL;
}
return malloc(alloc_size);
}
/* bool */
static inline void apir_encode_bool_t(apir_encoder * enc, const bool * val) {
apir_encode(enc, sizeof(int), val, sizeof(bool));
}
static inline void apir_decode_bool_t(apir_decoder * dec, bool * val) {
apir_decode(dec, sizeof(int), val, sizeof(bool));
}
/* apir_buffer_type_host_handle_t */
static inline void apir_encode_apir_buffer_type_host_handle_t(apir_encoder * enc,
const apir_buffer_type_host_handle_t * val) {
apir_encode(enc, sizeof(apir_buffer_type_host_handle_t), val, sizeof(apir_buffer_type_host_handle_t));
}
static inline void apir_decode_apir_buffer_type_host_handle_t(apir_decoder * dec,
apir_buffer_type_host_handle_t * val) {
apir_decode(dec, sizeof(apir_buffer_type_host_handle_t), val, sizeof(apir_buffer_type_host_handle_t));
}
/* apir_buffer_host_handle_t */
static inline void apir_encode_apir_buffer_host_handle_t(apir_encoder * enc, const apir_buffer_host_handle_t * val) {
apir_encode(enc, sizeof(apir_buffer_host_handle_t), val, sizeof(apir_buffer_host_handle_t));
}
static inline void apir_decode_apir_buffer_host_handle_t(apir_decoder * dec, apir_buffer_host_handle_t * val) {
apir_decode(dec, sizeof(apir_buffer_host_handle_t), val, sizeof(apir_buffer_host_handle_t));
}
/* uintptr_t */
static inline void apir_encode_uintptr_t(apir_encoder * enc, const uintptr_t * val) {
apir_encode(enc, sizeof(*val), val, sizeof(*val));
}
static inline void apir_decode_uintptr_t(apir_decoder * dec, uintptr_t * val) {
apir_decode(dec, sizeof(*val), val, sizeof(*val));
}
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