Dmitry V. Levin
414fe7d4d2
Correct spacing to fix warnings reported by
git diff --check 4b825dc642 HEAD
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
22 lines
928 B
Plaintext
22 lines
928 B
Plaintext
Even though SVR4 has truss, you may prefer using strace for a number
|
|
of reasons. Not the least of which are portability and source code.
|
|
|
|
The main event loop is awkward on systems for which procfs isn't
|
|
pollable. I think a pollable procfs is a Solaris invention so most SVR4
|
|
systems have this weakness. On Solaris, strace runs as a single
|
|
controlling process. This is a big improvement if you are debugging a
|
|
lot of processes at once.
|
|
|
|
There is no thread support but it wouldn't be very difficult to add it.
|
|
|
|
On UnixWare using the -f option to follow forked children sometimes shows
|
|
many "unfinished" system calls as strace bounces between each runnable child.
|
|
A crude workaround for this is available by adding
|
|
|
|
#define POLL_HACK 1
|
|
|
|
to the config.h file. This forces strace to check whether the last process
|
|
has finished a system call before polling other processes for events.
|
|
|
|
Wichert Akkerman <wakkerma@debian.org>
|