linux file loading / saving working (with questionable threading)
This commit is contained in:
insofaras
parent
654e2ab8e1
commit
c1b0521e81
336
linux_4ed.cpp
336
linux_4ed.cpp
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@ -57,6 +57,32 @@
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <pthread.h>
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#include <signal.h>
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struct Linux_Semaphore {
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pthread_mutex_t mutex;
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pthread_cond_t cond;
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};
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struct Linux_Semaphore_Handle {
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pthread_mutex_t *mutex_p;
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pthread_cond_t *cond_p;
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};
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struct Thread_Context{
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u32 job_id;
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b32 running;
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Work_Queue *queue;
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u32 id;
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pthread_t handle;
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};
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struct Thread_Group{
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Thread_Context *threads;
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i32 count;
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};
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struct Linux_Vars{
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Display *XDisplay;
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@ -79,6 +105,11 @@ struct Linux_Vars{
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void *app_code;
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void *custom;
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Thread_Memory *thread_memory;
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Thread_Group groups[THREAD_GROUP_COUNT];
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Linux_Semaphore thread_locks[THREAD_GROUP_COUNT];
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Linux_Semaphore locks[LOCK_COUNT];
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Plat_Settings settings;
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System_Functions *system;
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@ -99,6 +130,8 @@ struct Linux_Vars{
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#define FPS 60
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#define frame_useconds (1000000 / FPS)
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#define DBG_FN do { fprintf(stderr, "Fn called: %s\n", __PRETTY_FUNCTION__); } while(0)
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globalvar Linux_Vars linuxvars;
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globalvar Application_Memory memory_vars;
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globalvar Exchange exchange_vars;
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@ -328,6 +361,7 @@ Sys_Post_Clipboard_Sig(system_post_clipboard){
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Sys_CLI_Call_Sig(system_cli_call){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(path);
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AllowLocal(script_name);
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AllowLocal(cli_out);
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@ -335,11 +369,13 @@ Sys_CLI_Call_Sig(system_cli_call){
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Sys_CLI_Begin_Update_Sig(system_cli_begin_update){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(cli);
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}
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Sys_CLI_Update_Step_Sig(system_cli_update_step){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(cli);
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AllowLocal(dest);
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AllowLocal(max);
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@ -348,31 +384,156 @@ Sys_CLI_Update_Step_Sig(system_cli_update_step){
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Sys_CLI_End_Update_Sig(system_cli_end_update){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(cli);
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}
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Sys_Post_Job_Sig(system_post_job){
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// TODO(allen): Implement
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AllowLocal(group_id);
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AllowLocal(job);
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static_assert(sizeof(Plat_Handle) >= sizeof(Linux_Semaphore_Handle), "Plat_Handle not big enough");
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internal Plat_Handle
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LinuxSemToHandle(Linux_Semaphore* sem){
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Linux_Semaphore_Handle h = { &sem->mutex, &sem->cond };
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return *(Plat_Handle*)&h;
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}
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Sys_Cancel_Job_Sig(system_cancel_job){
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internal void*
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ThreadProc(void* arg){
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Thread_Context *thread = (Thread_Context*)arg;
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Work_Queue *queue = thread->queue;
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for (;;){
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u32 read_index = queue->read_position;
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u32 write_index = queue->write_position;
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if (read_index != write_index){
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u32 next_read_index = (read_index + 1) % JOB_ID_WRAP;
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u32 safe_read_index =
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__sync_val_compare_and_swap(&queue->read_position,
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read_index, next_read_index);
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if (safe_read_index == read_index){
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Full_Job_Data *full_job = queue->jobs + (safe_read_index % QUEUE_WRAP);
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// NOTE(allen): This is interlocked so that it plays nice
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// with the cancel job routine, which may try to cancel this job
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// at the same time that we try to run it
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i32 safe_running_thread =
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__sync_val_compare_and_swap(&full_job->running_thread,
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THREAD_NOT_ASSIGNED, thread->id);
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if (safe_running_thread == THREAD_NOT_ASSIGNED){
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thread->job_id = full_job->id;
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thread->running = 1;
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Thread_Memory *thread_memory = 0;
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// TODO(allen): remove memory_request
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if (full_job->job.memory_request != 0){
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thread_memory = linuxvars.thread_memory + thread->id - 1;
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if (thread_memory->size < full_job->job.memory_request){
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if (thread_memory->data){
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LinuxFreeMemory(thread_memory->data);
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}
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i32 new_size = LargeRoundUp(full_job->job.memory_request, Kbytes(4));
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thread_memory->data = LinuxGetMemory(new_size);
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thread_memory->size = new_size;
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}
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}
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full_job->job.callback(linuxvars.system, thread, thread_memory,
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&exchange_vars.thread, full_job->job.data);
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full_job->running_thread = 0;
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thread->running = 0;
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}
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}
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}
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else{
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Linux_Semaphore_Handle* h = (Linux_Semaphore_Handle*)&(queue->semaphore);
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pthread_cond_wait(h->cond_p, h->mutex_p);
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}
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}
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}
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Sys_Post_Job_Sig(system_post_job){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(group_id);
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AllowLocal(job_id);
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AllowLocal(job);
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Work_Queue *queue = exchange_vars.thread.queues + group_id;
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Assert((queue->write_position + 1) % QUEUE_WRAP != queue->read_position % QUEUE_WRAP);
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b32 success = 0;
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u32 result = 0;
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while (!success){
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u32 write_index = queue->write_position;
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u32 next_write_index = (write_index + 1) % JOB_ID_WRAP;
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u32 safe_write_index =
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__sync_val_compare_and_swap(&queue->write_position,
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write_index, next_write_index);
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if (safe_write_index == write_index){
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result = write_index;
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write_index = write_index % QUEUE_WRAP;
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queue->jobs[write_index].job = job;
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queue->jobs[write_index].running_thread = THREAD_NOT_ASSIGNED;
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queue->jobs[write_index].id = result;
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success = 1;
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}
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}
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Linux_Semaphore_Handle* h = (Linux_Semaphore_Handle*)&(queue->semaphore);
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pthread_cond_broadcast(h->cond_p);
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return result;
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}
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Sys_Acquire_Lock_Sig(system_acquire_lock){
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// TODO(allen): Implement
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AllowLocal(id);
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// printf("%s: id: %d\n", __PRETTY_FUNCTION__, id);
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pthread_mutex_lock(&linuxvars.locks[id].mutex);
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//pthread_cond_wait(&linuxvars.locks[id].cond, &linuxvars.locks[id].mutex);
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pthread_mutex_unlock(&linuxvars.locks[id].mutex);
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}
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Sys_Release_Lock_Sig(system_release_lock){
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// TODO(allen): Implement
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AllowLocal(id);
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//printf("%s: id: %d\n", __PRETTY_FUNCTION__, id);
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pthread_mutex_lock(&linuxvars.locks[id].mutex);
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pthread_cond_broadcast(&linuxvars.locks[id].cond);
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pthread_mutex_unlock(&linuxvars.locks[id].mutex);
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}
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Sys_Cancel_Job_Sig(system_cancel_job){
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DBG_FN;
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AllowLocal(group_id);
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AllowLocal(job_id);
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Work_Queue *queue = exchange_vars.thread.queues + group_id;
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Thread_Group *group = linuxvars.groups + group_id;
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u32 job_index;
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u32 thread_id;
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Full_Job_Data *full_job;
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Thread_Context *thread;
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job_index = job_id % QUEUE_WRAP;
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full_job = queue->jobs + job_index;
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Assert(full_job->id == job_id);
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thread_id =
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__sync_val_compare_and_swap(&full_job->running_thread,
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THREAD_NOT_ASSIGNED, 0);
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if (thread_id != THREAD_NOT_ASSIGNED){
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system_acquire_lock(CANCEL_LOCK0 + thread_id - 1);
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thread = group->threads + thread_id - 1;
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pthread_kill(thread->handle, SIGINT); //NOTE(inso) SIGKILL if you really want it to die.
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pthread_create(&thread->handle, NULL, &ThreadProc, thread);
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system_release_lock(CANCEL_LOCK0 + thread_id - 1);
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thread->running = 0;
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}
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}
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Sys_Grow_Thread_Memory_Sig(system_grow_thread_memory){
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void *old_data;
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i32 old_size, new_size;
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@ -402,6 +563,7 @@ INTERNAL_Sys_Sentinel_Sig(internal_sentinel){
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INTERNAL_Sys_Get_Thread_States_Sig(internal_get_thread_states){
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// TODO(allen): Implement
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DBG_FN;
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AllowLocal(id);
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AllowLocal(running);
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AllowLocal(pending);
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@ -502,10 +664,44 @@ out:
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internal
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Sys_Save_File_Sig(system_save_file){
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b32 result = 0;
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// TODO(allen): Implement
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AllowLocal(filename);
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AllowLocal(data);
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AllowLocal(size);
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DBG_FN;
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const size_t save_fsz = strlen(filename);
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const char tmp_end[] = ".4ed.XXXXXX";
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char* tmp_fname = (char*) alloca(save_fsz + sizeof(tmp_end));
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memcpy(tmp_fname, filename, save_fsz);
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memcpy(tmp_fname + save_fsz, tmp_end, sizeof(tmp_end));
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int tmp_fd = mkstemp(tmp_fname);
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if(tmp_fd == -1){
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perror("system_save_file: mkstemp");
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return result;
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}
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size_t remaining = size;
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do {
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ssize_t written = write(tmp_fd, data, size);
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if(written == -1){
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if(errno == EINTR){
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continue;
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} else {
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perror("system_save_file: write");
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unlink(tmp_fname);
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return result;
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}
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} else {
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remaining -= written;
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}
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} while(remaining);
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if(rename(tmp_fname, filename) == -1){
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perror("system_save_file: rename");
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unlink(tmp_fname);
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return result;
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}
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result = 1;
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return(result);
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}
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@ -1060,7 +1256,8 @@ InitializeXInput(Display *dpy, Window XWindow)
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PointerMotionMask |
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FocusChangeMask |
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StructureNotifyMask |
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MappingNotify
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MappingNotify |
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ExposureMask
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);
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result.input_method = XOpenIM(dpy, 0, 0, 0);
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@ -1230,7 +1427,38 @@ main(int argc, char **argv)
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#endif
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// TODO(allen): Setup background threads and locks
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Thread_Context background[4] = {};
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linuxvars.groups[BACKGROUND_THREADS].threads = background;
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linuxvars.groups[BACKGROUND_THREADS].count = ArrayCount(background);
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Thread_Memory thread_memory[ArrayCount(background)];
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linuxvars.thread_memory = thread_memory;
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pthread_mutex_init(&linuxvars.thread_locks[BACKGROUND_THREADS].mutex, NULL);
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pthread_cond_init(&linuxvars.thread_locks[BACKGROUND_THREADS].cond, NULL);
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exchange_vars.thread.queues[BACKGROUND_THREADS].semaphore =
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LinuxSemToHandle(&linuxvars.thread_locks[BACKGROUND_THREADS]);
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for(i32 i = 0; i < linuxvars.groups[BACKGROUND_THREADS].count; ++i){
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Thread_Context *thread = linuxvars.groups[BACKGROUND_THREADS].threads + i;
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thread->id = i + 1;
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Thread_Memory *memory = linuxvars.thread_memory + i;
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*memory = {};
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memory->id = thread->id;
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thread->queue = &exchange_vars.thread.queues[BACKGROUND_THREADS];
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pthread_create(&thread->handle, NULL, &ThreadProc, thread);
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}
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Assert(linuxvars.locks);
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for(i32 i = 0; i < LOCK_COUNT; ++i){
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pthread_mutex_init(&linuxvars.locks[i].mutex, NULL);
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pthread_cond_init(&linuxvars.locks[i].cond, NULL);
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}
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LinuxLoadRenderCode();
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linuxvars.target.max = Mbytes(1);
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linuxvars.target.push_buffer = (byte*)system_get_memory(linuxvars.target.max);
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@ -1400,17 +1628,11 @@ main(int argc, char **argv)
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push_key(0, 0, 0, &mods, is_hold);
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}
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}
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linuxvars.redraw = 1;
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}break;
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case KeyRelease: {
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linuxvars.redraw = 1;
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}break;
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case MotionNotify: {
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linuxvars.mouse_data.x = Event.xmotion.x;
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linuxvars.mouse_data.y = Event.xmotion.y;
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linuxvars.redraw = 1;
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}break;
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case ButtonPress: {
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@ -1424,7 +1646,6 @@ main(int argc, char **argv)
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linuxvars.mouse_data.right_button = 1;
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} break;
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}
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linuxvars.redraw = 1;
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}break;
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case ButtonRelease: {
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@ -1438,24 +1659,20 @@ main(int argc, char **argv)
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linuxvars.mouse_data.right_button = 0;
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} break;
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}
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linuxvars.redraw = 1;
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}break;
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case EnterNotify: {
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linuxvars.mouse_data.out_of_window = 0;
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linuxvars.redraw = 1;
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}break;
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case LeaveNotify: {
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linuxvars.mouse_data.out_of_window = 1;
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linuxvars.redraw = 1;
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}break;
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case FocusIn:
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case FocusOut: {
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linuxvars.mouse_data.left_button = 0;
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linuxvars.mouse_data.right_button = 0;
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linuxvars.redraw = 1;
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}break;
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case ConfigureNotify: {
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@ -1559,6 +1776,10 @@ main(int argc, char **argv)
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}
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}
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}break;
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case Expose: {
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linuxvars.redraw = 1;
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}break;
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}
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PrevEvent = Event;
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@ -1582,6 +1803,11 @@ main(int argc, char **argv)
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mouse = linuxvars.mouse_data;
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result.mouse_cursor_type = APP_MOUSE_CURSOR_DEFAULT;
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if(__sync_bool_compare_and_swap(&exchange_vars.thread.force_redraw, 1, 0)){
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linuxvars.redraw = 1;
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}
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result.redraw = linuxvars.redraw;
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result.lctrl_lalt_is_altgr = 0;
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@ -1613,6 +1839,62 @@ main(int argc, char **argv)
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linuxvars.mouse_data.left_button_released = 0;
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linuxvars.mouse_data.right_button_pressed = 0;
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linuxvars.mouse_data.right_button_released = 0;
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ProfileStart(OS_file_process);
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{
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File_Slot *file;
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int d = 0;
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for (file = exchange_vars.file.active.next;
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file != &exchange_vars.file.active;
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file = file->next){
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++d;
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if (file->flags & FEx_Save){
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Assert((file->flags & FEx_Request) == 0);
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file->flags &= (~FEx_Save);
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if (system_save_file(file->filename, (char*)file->data, file->size)){
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file->flags |= FEx_Save_Complete;
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}
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else{
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file->flags |= FEx_Save_Failed;
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}
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}
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if (file->flags & FEx_Request){
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Assert((file->flags & FEx_Save) == 0);
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file->flags &= (~FEx_Request);
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Data sysfile =
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system_load_file(file->filename);
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if (sysfile.data == 0){
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file->flags |= FEx_Not_Exist;
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}
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else{
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file->flags |= FEx_Ready;
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file->data = sysfile.data;
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file->size = sysfile.size;
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}
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}
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}
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Assert(d == exchange_vars.file.num_active);
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for (file = exchange_vars.file.free_list.next;
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file != &exchange_vars.file.free_list;
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file = file->next){
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if (file->data){
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system_free_memory(file->data);
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}
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}
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if (exchange_vars.file.free_list.next != &exchange_vars.file.free_list){
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ex__insert_range(exchange_vars.file.free_list.next, exchange_vars.file.free_list.prev,
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&exchange_vars.file.available);
|
||||
}
|
||||
|
||||
ex__check(&exchange_vars.file);
|
||||
}
|
||||
ProfileEnd(OS_file_process);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue