a2a0e1f353
Summary: This change allows for handling the in-memory data associated with the FDR mode implementation through the new `__xray_log_process_buffers` API. With this change, we can now allow users to process the data in-memory of the process instead of through writing files. This for example allows users to stream the data of the FDR logging implementation through network sockets, or through other mechanisms instead of saving them to local files. We introduce an FDR-specific flag, for "no_file_flush" which lets the flushing logic skip opening/writing to files. This option can be defaulted to `true` when building the compiler-rt XRay runtime through the `XRAY_FDR_OPTIONS` preprocessor macro. Reviewers: kpw, echristo, pelikan, eizan Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D46574 llvm-svn: 332208
30 lines
1.3 KiB
C++
30 lines
1.3 KiB
C++
//===-- xray_fdr_flags.inc --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// XRay FDR Mode runtime flags.
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//
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//===----------------------------------------------------------------------===//
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#ifndef XRAY_FLAG
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#error "Define XRAY_FLAG prior to including this file!"
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#endif
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// FDR (Flight Data Recorder) Mode logging options.
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XRAY_FLAG(int, func_duration_threshold_us, 5,
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"FDR logging will try to skip functions that execute for fewer "
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"microseconds than this threshold.")
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XRAY_FLAG(int, grace_period_ms, 100,
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"FDR logging will wait this much time in milliseconds before "
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"actually flushing the log; this gives a chance for threads to "
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"notice that the log has been finalized and clean up.")
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XRAY_FLAG(int, buffer_size, 16384,
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"Size of buffers in the circular buffer queue.")
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XRAY_FLAG(int, buffer_max, 100, "Maximum number of buffers in the queue.")
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XRAY_FLAG(bool, no_file_flush, false,
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"Set to true to not write log files by default.")
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