427215ce5e
Summary: Currently, we assume that applications built with XRay would like to have the instrumentation sleds patched before main starts. This patch changes the default so that we do not patch the instrumentation sleds before main. This default is more helpful for deploying applications in environments where changing the current default is harder (i.e. on remote machines, or work-pool-like systems). This default (not to patch pre-main) makes it easier to selectively run applications with XRay instrumentation enabled, than with the current state. Reviewers: echristo, timshen Subscribers: mehdi_amini, llvm-commits Differential Revision: https://reviews.llvm.org/D30396 llvm-svn: 296445
21 lines
569 B
C++
21 lines
569 B
C++
// Check to make sure that we have a log file with a fixed-size.
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// RUN: %clangxx_xray -std=c++11 %s -o %t
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// RUN: XRAY_OPTIONS="patch_premain=true xray_naive_log=true verbosity=1 xray_logfile_base=fixedsize-logging-" %run %t 2>&1 | FileCheck %s
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//
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// After all that, clean up the output xray log.
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//
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// RUN: rm fixedsize-logging-*
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#include <cstdio>
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[[clang::xray_always_instrument]] void foo() {
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printf("foo() is always instrumented!");
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}
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int main() {
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// CHECK: XRay: Log file in 'fixedsize-logging-{{.*}}'
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foo();
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// CHECK: foo() is always instrumented!
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}
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