Mercurial > hg > graal-compiler
comparison src/share/vm/utilities/debug.hpp @ 2152:0fa27f37d4d4
6977804: G1: remove the zero-filling thread
Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification.
Reviewed-by: jcoomes, johnc
author | tonyp |
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date | Wed, 19 Jan 2011 19:30:42 -0500 |
parents | f95d63e2154a |
children | 3582bf76420e |
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2151:cb913d743d09 | 2152:0fa27f37d4d4 |
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32 // Simple class to format the ctor arguments into a fixed-sized buffer. | 32 // Simple class to format the ctor arguments into a fixed-sized buffer. |
33 template <size_t bufsz = 256> | 33 template <size_t bufsz = 256> |
34 class FormatBuffer { | 34 class FormatBuffer { |
35 public: | 35 public: |
36 inline FormatBuffer(const char * format, ...); | 36 inline FormatBuffer(const char * format, ...); |
37 inline void append(const char* format, ...); | |
37 operator const char *() const { return _buf; } | 38 operator const char *() const { return _buf; } |
38 | 39 |
39 private: | 40 private: |
40 FormatBuffer(const FormatBuffer &); // prevent copies | 41 FormatBuffer(const FormatBuffer &); // prevent copies |
41 | 42 |
46 template <size_t bufsz> | 47 template <size_t bufsz> |
47 FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) { | 48 FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) { |
48 va_list argp; | 49 va_list argp; |
49 va_start(argp, format); | 50 va_start(argp, format); |
50 vsnprintf(_buf, bufsz, format, argp); | 51 vsnprintf(_buf, bufsz, format, argp); |
52 va_end(argp); | |
53 } | |
54 | |
55 template <size_t bufsz> | |
56 void FormatBuffer<bufsz>::append(const char* format, ...) { | |
57 // Given that the constructor does a vsnprintf we can assume that | |
58 // _buf is already initialized. | |
59 size_t len = strlen(_buf); | |
60 char* buf_end = _buf + len; | |
61 | |
62 va_list argp; | |
63 va_start(argp, format); | |
64 vsnprintf(buf_end, bufsz - len, format, argp); | |
51 va_end(argp); | 65 va_end(argp); |
52 } | 66 } |
53 | 67 |
54 // Used to format messages for assert(), guarantee(), fatal(), etc. | 68 // Used to format messages for assert(), guarantee(), fatal(), etc. |
55 typedef FormatBuffer<> err_msg; | 69 typedef FormatBuffer<> err_msg; |