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Diffstat (limited to '')
| -rw-r--r-- | man3/mtrace.3 | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/man3/mtrace.3 b/man3/mtrace.3 index 442da6f..61e8251 100644 --- a/man3/mtrace.3 +++ b/man3/mtrace.3 @@ -3,7 +3,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH mtrace 3 2023-07-20 "Linux man-pages 6.05.01" +.TH mtrace 3 2024-02-26 "Linux man-pages 6.7" .SH NAME mtrace, muntrace \- malloc tracing .SH LIBRARY @@ -12,7 +12,7 @@ Standard C library .SH SYNOPSIS .nf .B "#include <mcheck.h>" -.PP +.P .B "void mtrace(void);" .B "void muntrace(void);" .fi @@ -28,7 +28,7 @@ These hook functions record tracing information about memory allocation and deallocation. The tracing information can be used to discover memory leaks and attempts to free nonallocated memory in a program. -.PP +.P The .BR muntrace () function disables the hook functions installed by @@ -39,7 +39,7 @@ If no hook functions were successfully installed by .BR mtrace (), .BR muntrace () does nothing. -.PP +.P When .BR mtrace () is called, it checks the value of the environment variable @@ -47,7 +47,7 @@ is called, it checks the value of the environment variable which should contain the pathname of a file in which the tracing information is to be recorded. If the pathname is successfully opened, it is truncated to zero length. -.PP +.P If .B MALLOC_TRACE is not set, @@ -75,7 +75,6 @@ T{ .BR muntrace () T} Thread safety MT-Unsafe .TE -.sp 1 .\" FIXME: The marking is different from that in the glibc manual, .\" markings in glibc manual are more detailed: .\" @@ -93,7 +92,7 @@ In normal usage, is called once at the start of execution of a program, and .BR muntrace () is never called. -.PP +.P The tracing output produced after a call to .BR mtrace () is textual, but not designed to be human readable. @@ -103,7 +102,7 @@ that interprets the trace log and produces human-readable output. For best results, the traced program should be compiled with debugging enabled, so that line-number information is recorded in the executable. -.PP +.P The tracing performed by .BR mtrace () incurs a performance penalty (if @@ -122,7 +121,7 @@ function and the .BR mtrace (1) command in a program that has memory leaks at two different locations. The demonstration uses the following program: -.PP +.P .in +4n .RB "$ " "cat t_mtrace.c" .\" SRC BEGIN (t_mtrace.c) @@ -145,11 +144,11 @@ main(void) .EE .\" SRC END .in -.PP +.P When we run the program as follows, we see that .BR mtrace () diagnosed memory leaks at two different locations in the program: -.PP +.P .in +4n .EX .RB "$ " "cc \-g t_mtrace.c \-o t_mtrace" @@ -164,7 +163,7 @@ Memory not freed: 0x084c9448 0x100 at /home/cecilia/t_mtrace.c:16 .EE .in -.PP +.P The first two messages about unfreed memory correspond to the two .BR malloc (3) calls inside the |