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XrdFfsQueue.hh File Reference
#include <pthread.h>
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Classes

struct  XrdFfsQueueTasks
 

Functions

unsigned int XrdFfsQueue_count_tasks ()
 
int XrdFfsQueue_count_workers ()
 
struct XrdFfsQueueTasksXrdFfsQueue_create_task (void *(*func)(void *), void **args, short initstat)
 
int XrdFfsQueue_create_workers (int n)
 
void XrdFfsQueue_free_task (struct XrdFfsQueueTasks *task)
 
int XrdFfsQueue_remove_workers (int n)
 
void XrdFfsQueue_wait_task (struct XrdFfsQueueTasks *task)
 

Function Documentation

◆ XrdFfsQueue_count_tasks()

unsigned int XrdFfsQueue_count_tasks ( )

Definition at line 131 of file XrdFfsQueue.cc.

132{
133 unsigned int que_len = 0;
134 pthread_mutex_lock(&XrdFfsQueueTaskque_mutex);
135 if (XrdFfsQueueTaskque_head != NULL && XrdFfsQueueTaskque_tail != NULL) {
138 else
139// this is wrong:
140// que_len = (unsigned int)2147483647 - (XrdFfsQueueTaskque_head->id - XrdFfsQueueTaskque_tail->id) + 1;
141
142//not accepted by c89
143// que_len = (unsigned int)4294967295 - (XrdFfsQueueTaskque_head->id - XrdFfsQueueTaskque_tail->id) + 1;
144
145//this is not quite correct, but I imagine that the queue will never by so long >= 2147483647
146 que_len = (unsigned int)2147483647 - (XrdFfsQueueTaskque_head->id - XrdFfsQueueTaskque_tail->id) + 1+(unsigned int)2147483647+1;
147 }
148 pthread_mutex_unlock(&XrdFfsQueueTaskque_mutex);
149 return que_len;
150}
struct XrdFfsQueueTasks * XrdFfsQueueTaskque_head
pthread_mutex_t XrdFfsQueueTaskque_mutex
struct XrdFfsQueueTasks * XrdFfsQueueTaskque_tail
unsigned int id

References XrdFfsQueueTasks::id, XrdFfsQueueTaskque_head, XrdFfsQueueTaskque_mutex, and XrdFfsQueueTaskque_tail.

Referenced by XrdFfsPosix_statall().

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◆ XrdFfsQueue_count_workers()

int XrdFfsQueue_count_workers ( )

Definition at line 254 of file XrdFfsQueue.cc.

255{
256 int i;
257 pthread_mutex_lock(&XrdFfsQueueWorker_mutex);
259 pthread_mutex_unlock(&XrdFfsQueueWorker_mutex);
260 return i;
261}
pthread_mutex_t XrdFfsQueueWorker_mutex
unsigned short XrdFfsQueueNworkers

References XrdFfsQueueNworkers, and XrdFfsQueueWorker_mutex.

Referenced by XrdFfsMisc_xrd_init(), xrootdfs_getxattr(), xrootdfs_init(), and xrootdfs_setxattr().

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◆ XrdFfsQueue_create_task()

struct XrdFfsQueueTasks * XrdFfsQueue_create_task ( void *(*)(void *)  func,
void **  args,
short  initstat 
)

Definition at line 97 of file XrdFfsQueue.cc.

98{
99 struct XrdFfsQueueTasks *task = (struct XrdFfsQueueTasks*) malloc(sizeof(struct XrdFfsQueueTasks));
100 task->func = func;
101 task->args = args;
102 task->done = ( (initstat == -1)? -1 : 0); /* -1 means this task is meant to kill a worker thread */
103
104 pthread_mutex_init(&task->mutex, NULL);
105 pthread_cond_init(&task->cond, NULL);
106
108 return task;
109}
void XrdFfsQueue_enqueue(struct XrdFfsQueueTasks *task)
pthread_cond_t cond
pthread_mutex_t mutex
void *(* func)(void *)

References XrdFfsQueueTasks::args, XrdFfsQueueTasks::cond, XrdFfsQueueTasks::done, XrdFfsQueueTasks::func, XrdFfsQueueTasks::mutex, and XrdFfsQueue_enqueue().

Referenced by XrdFfsPosix_deleteall(), XrdFfsPosix_readdirall(), XrdFfsPosix_statall(), XrdFfsPosix_statvfsall(), and XrdFfsQueue_remove_workers().

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◆ XrdFfsQueue_create_workers()

int XrdFfsQueue_create_workers ( int  n)

Definition at line 192 of file XrdFfsQueue.cc.

193{
194 int i, rc, *id;
195 pthread_t *thread;
196 pthread_attr_t attr;
197 size_t stacksize = 2*1024*1024;
198
199 pthread_attr_init(&attr);
200 pthread_attr_setstacksize(&attr, stacksize);
201 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
202
203 pthread_mutex_lock(&XrdFfsQueueWorker_mutex);
204 for (i = 0; i < n; i++)
205 {
206 id = (int*) malloc(sizeof(int));
207 *id = XrdFfsQueueWorker_id++;
208 thread = (pthread_t*) malloc(sizeof(pthread_t));
209 if (thread == NULL)
210 {
212 break;
213 }
214 rc = pthread_create(thread, &attr, XrdFfsQueue_worker, id);
215 if (rc != 0)
216 {
218 break;
219 }
220 pthread_detach(*thread);
221 free(thread);
222 }
223 pthread_attr_destroy(&attr);
225 pthread_mutex_unlock(&XrdFfsQueueWorker_mutex);
226 return i;
227}
unsigned int XrdFfsQueueWorker_id
void * XrdFfsQueue_worker(void *x)

References XrdFfsQueueTasks::id, XrdFfsQueue_worker(), XrdFfsQueueNworkers, XrdFfsQueueWorker_id, and XrdFfsQueueWorker_mutex.

Referenced by XrdFfsMisc_xrd_init(), xrootdfs_init(), and xrootdfs_setxattr().

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◆ XrdFfsQueue_free_task()

void XrdFfsQueue_free_task ( struct XrdFfsQueueTasks task)

Definition at line 111 of file XrdFfsQueue.cc.

112{
113 pthread_mutex_destroy(&task->mutex);
114 pthread_cond_destroy(&task->cond);
115 task->func = NULL;
116 task->args = NULL;
117 task->next = NULL;
118 task->prev = NULL;
119 free(task);
120 task = NULL;
121}
struct XrdFfsQueueTasks * prev
struct XrdFfsQueueTasks * next

References XrdFfsQueueTasks::args, XrdFfsQueueTasks::cond, XrdFfsQueueTasks::func, XrdFfsQueueTasks::mutex, XrdFfsQueueTasks::next, and XrdFfsQueueTasks::prev.

Referenced by XrdFfsQueue_remove_workers().

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◆ XrdFfsQueue_remove_workers()

int XrdFfsQueue_remove_workers ( int  n)

Definition at line 229 of file XrdFfsQueue.cc.

230{
231 int i;
232 struct XrdFfsQueueTasks *task;
233
234 pthread_mutex_lock(&XrdFfsQueueWorker_mutex);
235 if (XrdFfsQueueNworkers == 0)
236 n = 0;
237 else if (n > XrdFfsQueueNworkers)
238 {
241 }
242 else
244 for (i = 0; i < n; i++)
245 {
246 task = XrdFfsQueue_create_task(NULL, NULL, -1);
249 }
250 pthread_mutex_unlock(&XrdFfsQueueWorker_mutex);
251 return n;
252}
void XrdFfsQueue_free_task(struct XrdFfsQueueTasks *task)
struct XrdFfsQueueTasks * XrdFfsQueue_create_task(void *(*func)(void *), void **args, short initstat)
void XrdFfsQueue_wait_task(struct XrdFfsQueueTasks *task)

References XrdFfsQueue_create_task(), XrdFfsQueue_free_task(), XrdFfsQueue_wait_task(), XrdFfsQueueNworkers, and XrdFfsQueueWorker_mutex.

Referenced by xrootdfs_setxattr().

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◆ XrdFfsQueue_wait_task()

void XrdFfsQueue_wait_task ( struct XrdFfsQueueTasks task)

Definition at line 123 of file XrdFfsQueue.cc.

124{
125 pthread_mutex_lock(&task->mutex);
126 if (task->done != 1)
127 pthread_cond_wait(&task->cond, &task->mutex);
128 pthread_mutex_unlock(&task->mutex);
129}

References XrdFfsQueueTasks::cond, XrdFfsQueueTasks::done, and XrdFfsQueueTasks::mutex.

Referenced by XrdFfsQueue_remove_workers().

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