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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "normxcorr_hw_msg.h"
#include "hw_sched.h"
//#include "mrses_ppu.h"
#define MUTEX_INIT(ctx, name) \
if (!err) { \
ctx->name##_mutex = g_mutex_new(); \
if (!ctx->name##_mutex) err = DICT_ERROR_GLIB; \
}
#define MUTEX_FREE(ctx, name) \
if (ctx->name##_mutex) g_mutex_free(ctx->name##_mutex);
#define COND_INIT(ctx, name) \
MUTEX_INIT(ctx, name##_cond) \
if (!err) { \
ctx->name##_cond = g_cond_new(); \
if (!ctx->name##_cond) { \
err = DICT_ERROR_GLIB; \
MUTEX_FREE(ctx, name##_cond) \
} \
}
#define COND_FREE(ctx, name) \
if (ctx->name##_cond) g_cond_free(ctx->name##_cond); \
MUTEX_FREE(ctx, name##_cond)
HWRunFunction ppu_run[] = {
(HWRunFunction)NULL
};
static int hw_sched_initialized = 0;
int hw_sched_init() {
if (!hw_sched_initialized) {
g_thread_init(NULL);
hw_sched_initialized = 1;
}
return 0;
}
HWSched hw_sched_create(int ppu_count) {
int i;
int err = 0;
HWSched ctx;
hw_sched_init();
ctx = (HWSched)malloc(sizeof(HWSchedS));
if (!ctx) return NULL;
memset(ctx, 0, sizeof(HWSchedS));
ctx->status = 1;
MUTEX_INIT(ctx, data);
COND_INIT(ctx, compl);
COND_INIT(ctx, job);
if (err) {
reportError("Error initializing conditions and mutexes");
hw_sched_destroy(ctx);
return NULL;
}
ctx->n_threads = 0;
for (i = 0; i < ppu_count; i++) {
ctx->thread[ctx->n_threads] = hw_thread_create(ctx, ctx->n_threads, NULL, ppu_run, NULL);
if (ctx->thread[ctx->n_threads]) ++ctx->n_threads;
}
return ctx;
}
static int hw_sched_wait_threads(HWSched ctx) {
int i = 0;
hw_sched_lock(ctx, compl_cond);
while (i < ctx->n_threads) {
for (; i < ctx->n_threads; i++) {
if (ctx->thread[i]->status == HW_THREAD_STATUS_INIT) {
hw_sched_wait(ctx, compl);
break;
}
}
}
hw_sched_unlock(ctx, compl_cond);
ctx->started = 1;
return 0;
}
void hw_sched_destroy(HWSched ctx) {
int i;
if (ctx->n_threads > 0) {
if (!ctx->started) {
hw_sched_wait_threads(ctx);
}
ctx->status = 0;
hw_sched_lock(ctx, job_cond);
hw_sched_broadcast(ctx, job);
hw_sched_unlock(ctx, job_cond);
for (i = 0; i < ctx->n_threads; i++) {
hw_thread_destroy(ctx->thread[i]);
}
}
COND_FREE(ctx, job);
COND_FREE(ctx, compl);
MUTEX_FREE(ctx, data);
free(ctx);
}
int hw_sched_limit_num_threads(HWSched ctx, int count) {
ctx->n_threads_actual = count;
return 0;
}
int hw_sched_set_sequential_mode(HWSched ctx, int *n_blocks, int *cur_block) {
ctx->mode = HW_SCHED_MODE_SEQUENTIAL;
ctx->n_blocks = n_blocks;
ctx->cur_block = cur_block;
return 0;
}
int hw_sched_get_chunk(HWSched ctx, int thread_id) {
int block;
if ((ctx->n_threads_actual)&&(thread_id >= ctx->n_threads_actual)) return -1;
switch (ctx->mode) {
case HW_SCHED_MODE_PREALLOCATED:
if (ctx->thread[thread_id]->status == HW_THREAD_STATUS_IDLE) {
return thread_id;
} else {
return -1;
}
case HW_SCHED_MODE_SEQUENTIAL:
hw_sched_lock(ctx, data);
block = *ctx->cur_block;
if (block < *ctx->n_blocks) {
*ctx->cur_block = *ctx->cur_block + 1;
} else {
block = -1;
}
hw_sched_unlock(ctx, data);
return block;
default:
return -1;
}
return -1;
}
int hw_sched_schedule_task(HWSched ctx, void *appctx, HWEntry entry) {
if (!ctx->started) {
hw_sched_wait_threads(ctx);
}
ctx->ctx = appctx;
ctx->entry = entry;
hw_sched_lock(ctx, compl_cond);
hw_sched_lock(ctx, job_cond);
hw_sched_broadcast(ctx, job);
hw_sched_unlock(ctx, job_cond);
return 0;
}
int hw_sched_wait_task(HWSched ctx) {
int i = 0;
while (i < ctx->n_threads) {
for (; i < ctx->n_threads; i++) {
if (ctx->thread[i]->status == HW_THREAD_STATUS_DONE) {
ctx->thread[i]->status = HW_THREAD_STATUS_IDLE;
} else {
hw_sched_wait(ctx, compl);
break;
}
}
}
hw_sched_unlock(ctx, compl_cond);
return 0;
}
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