106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
#include <unistd.h>
|
|
#include "ipfs/exchange/bitswap/engine.h"
|
|
#include "ipfs/exchange/bitswap/wantlist_queue.h"
|
|
#include "ipfs/exchange/bitswap/peer_request_queue.h"
|
|
|
|
/***
|
|
* Implementation of the bitswap engine
|
|
*/
|
|
|
|
/***
|
|
* Allocate resources for a BitswapEngine
|
|
* @returns a new struct BitswapEngine
|
|
*/
|
|
struct BitswapEngine* ipfs_bitswap_engine_new() {
|
|
struct BitswapEngine* engine = (struct BitswapEngine*) malloc(sizeof(struct BitswapEngine));
|
|
if (engine != NULL) {
|
|
engine->shutting_down = 0;
|
|
}
|
|
return engine;
|
|
}
|
|
|
|
/***
|
|
* Deallocate resources from struct BitswapEngine
|
|
* @param engine the engine to free
|
|
* @returns true(1)
|
|
*/
|
|
int ipfs_bitswap_engine_free(struct BitswapEngine* engine) {
|
|
free(engine);
|
|
return 1;
|
|
}
|
|
|
|
/***
|
|
* A separate thread that processes the queue
|
|
* @param context the context
|
|
*/
|
|
void* ipfs_bitswap_engine_wantlist_processor_start(void* ctx) {
|
|
struct BitswapContext* context = (struct BitswapContext*)ctx;
|
|
// the loop
|
|
while (!context->bitswap_engine->shutting_down) {
|
|
struct WantListQueueEntry* item = ipfs_bitswap_wantlist_queue_pop(context->localWantlist);
|
|
if (item != NULL) {
|
|
// if there is something on the queue process it.
|
|
ipfs_bitswap_wantlist_process_entry(context, item);
|
|
} else {
|
|
// if there is nothing on the queue, wait...
|
|
sleep(2);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/***
|
|
* A separate thread that processes the queue
|
|
* @param context the context
|
|
*/
|
|
void* ipfs_bitswap_engine_peer_request_processor_start(void* ctx) {
|
|
struct BitswapContext* context = (struct BitswapContext*)ctx;
|
|
// the loop
|
|
while (!context->bitswap_engine->shutting_down) {
|
|
struct PeerRequest* item = ipfs_bitswap_peer_request_queue_pop(context->peerRequestQueue);
|
|
if (item != NULL) {
|
|
// if there is something on the queue process it.
|
|
ipfs_bitswap_peer_request_process_entry(context, item);
|
|
} else {
|
|
// if there is nothing on the queue, wait...
|
|
sleep(2);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Starts the bitswap engine that processes queue items. There
|
|
* should only be one of these per ipfs instance.
|
|
*
|
|
* @param context the context
|
|
* @returns true(1) on success, false(0) otherwise
|
|
*/
|
|
int ipfs_bitswap_engine_start(const struct BitswapContext* context) {
|
|
context->bitswap_engine->shutting_down = 0;
|
|
|
|
// fire off the threads
|
|
if (pthread_create(&context->bitswap_engine->wantlist_processor_thread, NULL, ipfs_bitswap_engine_wantlist_processor_start, (void*)context)) {
|
|
return 0;
|
|
}
|
|
if (pthread_create(&context->bitswap_engine->peer_request_processor_thread, NULL, ipfs_bitswap_engine_peer_request_processor_start, (void*)context)) {
|
|
ipfs_bitswap_engine_stop(context);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/***
|
|
* Shut down the engine
|
|
* @param context the context
|
|
* @returns true(1) on success, false(0) otherwise
|
|
*/
|
|
int ipfs_bitswap_engine_stop(const struct BitswapContext* context) {
|
|
context->bitswap_engine->shutting_down = 1;
|
|
|
|
int error1 = pthread_join(context->bitswap_engine->wantlist_processor_thread, NULL);
|
|
int error2 = pthread_join(context->bitswap_engine->peer_request_processor_thread, NULL);
|
|
|
|
return !error1 && !error2;
|
|
}
|