Revision: 56388
http://sourceforge.net/p/brlcad/code/56388
Author: mohitdaga
Date: 2013-07-31 16:58:08 +0000 (Wed, 31 Jul 2013)
Log Message:
-----------
Applying seamaphore locks after modifying icv_writeline(..). This now doesnt
hang since icv_writeline doesnt ask for memory allocation any more. Thus
doesn't acquire BU_SEM_SYSCALL. This is expected to ensure sanctity in image
writting from rt.
Modified Paths:
--------------
brlcad/trunk/src/rt/view.c
brlcad/trunk/src/rt/viewedge.c
brlcad/trunk/src/rt/viewxray.c
Modified: brlcad/trunk/src/rt/view.c
===================================================================
--- brlcad/trunk/src/rt/view.c 2013-07-31 14:26:29 UTC (rev 56387)
+++ brlcad/trunk/src/rt/view.c 2013-07-31 16:58:08 UTC (rev 56388)
@@ -315,7 +315,9 @@
p[2] = b;
if (bif != NULL) {
+ bu_semaphore_acquire(BU_SEM_SYSCALL);
icv_writepixel(bif, ap->a_x, ap->a_y, ap->a_color);
+ bu_semaphore_release(BU_SEM_SYSCALL);
} else if (outfp != NULL) {
bu_semaphore_acquire(BU_SEM_SYSCALL);
if (bu_fseek(outfp, (ap->a_y*width*pwidth) +
(ap->a_x*pwidth), 0) != 0)
@@ -566,7 +568,9 @@
}
if (bif != NULL) {
/* TODO : Add double type data to maintain resolution */
+ bu_semaphore_acquire(BU_SEM_SYSCALL);
icv_writeline(bif, ap->a_y, (unsigned char
*)scanline[ap->a_y].sl_buf, ICV_DATA_UCHAR);
+ bu_semaphore_release(BU_SEM_SYSCALL);
} else if (outfp != NULL) {
size_t count;
Modified: brlcad/trunk/src/rt/viewedge.c
===================================================================
--- brlcad/trunk/src/rt/viewedge.c 2013-07-31 14:26:29 UTC (rev 56387)
+++ brlcad/trunk/src/rt/viewedge.c 2013-07-31 16:58:08 UTC (rev 56388)
@@ -816,8 +816,10 @@
/*
* Write to a file.
*/
+ bu_semaphore_acquire(BU_SEM_SYSCALL);
/* TODO : Add double type data to maintain resolution */
icv_writeline(bif, ap->a_y, scanline[cpu], ICV_DATA_UCHAR);
+ bu_semaphore_release(BU_SEM_SYSCALL);
}
if (fbp == FBIO_NULL && outputfile == NULL)
bu_log("rtedge: strange, no end of line actions taken.\n");
Modified: brlcad/trunk/src/rt/viewxray.c
===================================================================
--- brlcad/trunk/src/rt/viewxray.c 2013-07-31 14:26:29 UTC (rev 56387)
+++ brlcad/trunk/src/rt/viewxray.c 2013-07-31 16:58:08 UTC (rev 56388)
@@ -175,8 +175,10 @@
if (rt_g.rtg_parallel) {
bu_semaphore_acquire( BU_SEM_SYSCALL );
}
+ bu_semaphore_acquire(BU_SEM_SYSCALL);
/* TODO : Add double type data to maintain resolution */
icv_writeline(bif, ap->a_y, scanbuf, ICV_DATA_UCHAR);
+ bu_semaphore_release(BU_SEM_SYSCALL);
if (rt_g.rtg_parallel) {
bu_semaphore_release( BU_SEM_SYSCALL );
}
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