diff options
Diffstat (limited to '')
| -rw-r--r-- | man3/pthread_attr_setguardsize.3 | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/man3/pthread_attr_setguardsize.3 b/man3/pthread_attr_setguardsize.3 index 7d8d8cb..b436260 100644 --- a/man3/pthread_attr_setguardsize.3 +++ b/man3/pthread_attr_setguardsize.3 @@ -4,7 +4,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH pthread_attr_setguardsize 3 2023-07-20 "Linux man-pages 6.05.01" +.TH pthread_attr_setguardsize 3 2023-10-31 "Linux man-pages 6.7" .SH NAME pthread_attr_setguardsize, pthread_attr_getguardsize \- set/get guard size attribute in thread attributes object @@ -14,7 +14,7 @@ POSIX threads library .SH SYNOPSIS .nf .B #include <pthread.h> -.PP +.P .BI "int pthread_attr_setguardsize(pthread_attr_t *" attr \ ", size_t " guardsize ); .BI "int pthread_attr_getguardsize(const pthread_attr_t *restrict " attr , @@ -28,7 +28,7 @@ thread attributes object referred to by .I attr to the value specified in .IR guardsize . -.PP +.P If .I guardsize is greater than 0, @@ -38,15 +38,15 @@ the system allocates an additional region of at least .I guardsize bytes at the end of the thread's stack to act as the guard area for the stack (but see BUGS). -.PP +.P If .I guardsize is 0, then new threads created with .I attr will not have a guard area. -.PP +.P The default guard size is the same as the system page size. -.PP +.P If the stack address attribute has been set in .I attr (using @@ -61,7 +61,7 @@ it is the application's responsibility to handle stack overflow .BR mprotect (2) to manually define a guard area at the end of the stack that it has allocated). -.PP +.P The .BR pthread_attr_getguardsize () function returns the guard size attribute of the @@ -98,7 +98,6 @@ T{ .BR pthread_attr_getguardsize () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS POSIX.1-2008. .SH HISTORY @@ -118,11 +117,11 @@ the system page size when creating a thread. .BR pthread_attr_getguardsize () returns the guard size that was set by .BR pthread_attr_setguardsize ().) -.PP +.P Setting a guard size of 0 may be useful to save memory in an application that creates many threads and knows that stack overflow can never occur. -.PP +.P Choosing a guard size larger than the default size may be necessary for detecting stack overflows if a thread allocates large data structures on the stack. @@ -137,7 +136,7 @@ error from .BR pthread_create (3) if the guard size value is too large, leaving no space for the actual stack.) -.PP +.P The obsolete LinuxThreads implementation did the right thing, allocating extra space at the end of the stack for the guard area. .\" glibc includes the guardsize within the allocated stack size, |