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From 72ee29639c55b5942bc07c8ed0013005f8fc5a97 Mon Sep 17 00:00:00 2001
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From: Petr Machata <pmachata@redhat.com>
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Date: Wed, 8 Apr 2015 07:14:10 -0400
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Subject: [PATCH 2/2] Fix tracing multi-threaded processes without -f
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- In handle_syscall, we avoid touching stack of ignored processes.
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But in handle_sysret, we require a sysret-like stack entry even
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for ignored processes, even though we then go ahead to not act
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on that stack entry. Instead, for ignored processes, avoid looking
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at stack trace at all.
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---
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handle_event.c | 10 +++++-----
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testsuite/ltrace.main/main-threaded.exp | 1 +
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2 files changed, 6 insertions(+), 5 deletions(-)
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diff --git a/handle_event.c b/handle_event.c
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index 6fa7e98..c2550ad 100644
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--- a/handle_event.c
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+++ b/handle_event.c
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@@ -619,12 +619,12 @@ handle_x_sysret(Event *event, char *(*name_cb)(struct process *, int))
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debug(DEBUG_FUNCTION, "handle_x_sysret(pid=%d, sysnum=%d)",
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event->proc->pid, event->e_un.sysnum);
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- unsigned d = event->proc->callstack_depth;
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- assert(d > 0);
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- struct callstack_element *elem = &event->proc->callstack[d - 1];
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- assert(elem->is_syscall);
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-
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if (event->proc->state != STATE_IGNORED) {
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+ unsigned d = event->proc->callstack_depth;
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+ assert(d > 0);
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+ struct callstack_element *elem = &event->proc->callstack[d - 1];
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+ assert(elem->is_syscall);
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+
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struct timedelta spent = calc_time_spent(elem->enter_time);
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if (options.syscalls)
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output_syscall_right(event->proc,
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diff --git a/testsuite/ltrace.main/main-threaded.exp b/testsuite/ltrace.main/main-threaded.exp
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index cead82d..aca7afd 100644
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--- a/testsuite/ltrace.main/main-threaded.exp
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+++ b/testsuite/ltrace.main/main-threaded.exp
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@@ -60,5 +60,6 @@ set bin [ltraceCompile {} $libprint -lpthread [ltraceSource c {
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}]]
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ltraceMatch1 [ltraceRun -f -l libprint.so -- $bin] {print\(} == 30
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+ltraceMatch1 [ltraceRun -L -- $bin] exited == 1
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ltraceDone
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--
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2.1.0
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