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Diffstat (limited to '')
| -rw-r--r-- | man2/brk.2 | 18 |
1 files changed, 9 insertions, 9 deletions
@@ -7,7 +7,7 @@ .\" Modified Wed Jul 21 19:52:58 1993 by Rik Faith <faith@cs.unc.edu> .\" Modified Sun Aug 21 17:40:38 1994 by Rik Faith <faith@cs.unc.edu> .\" -.TH brk 2 2023-03-30 "Linux man-pages 6.05.01" +.TH brk 2 2023-10-31 "Linux man-pages 6.7" .SH NAME brk, sbrk \- change data segment size .SH LIBRARY @@ -16,16 +16,16 @@ Standard C library .SH SYNOPSIS .nf .B #include <unistd.h> -.PP +.P .BI "int brk(void *" addr ); .BI "void *sbrk(intptr_t " increment ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR brk (), .BR sbrk (): .nf @@ -57,14 +57,14 @@ uninitialized data segment). Increasing the program break has the effect of allocating memory to the process; decreasing the break deallocates memory. -.PP +.P .BR brk () sets the end of the data segment to the value specified by .IR addr , when that value is reasonable, the system has enough memory, and the process does not exceed its maximum data size (see .BR setrlimit (2)). -.PP +.P .BR sbrk () increments the program's data space by .I increment @@ -82,7 +82,7 @@ On error, \-1 is returned, and .I errno is set to .BR ENOMEM . -.PP +.P On success, .BR sbrk () returns the previous program break. @@ -113,7 +113,7 @@ the .BR malloc (3) memory allocation package is the portable and comfortable way of allocating memory. -.PP +.P Various systems use various types for the argument of .BR sbrk (). Common are \fIint\fP, \fIssize_t\fP, \fIptrdiff_t\fP, \fIintptr_t\fP. @@ -139,7 +139,7 @@ The glibc wrapper function does some work (i.e., checks whether the new break is less than .IR addr ) to provide the 0 and \-1 return values described above. -.PP +.P On Linux, .BR sbrk () is implemented as a library function that uses the |