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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| #include "precompiled.hpp" | ||
| #include "jfrContext.hpp" | ||
| #include "jfr/support/jfrThreadLocal.hpp" | ||
| #include "runtime/thread.hpp" | ||
|
|
||
| #ifndef MIN | ||
| #define MIN(a,b) ((a) < (b) ? (a) : (b)) | ||
| #endif | ||
|
|
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| uint8_t JfrContext::_size = 0; | ||
|
|
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| JfrThreadLocal* getThreadLocal() { | ||
| Thread* thrd = Thread::current_or_null_safe(); | ||
| return thrd != nullptr ? thrd->jfr_thread_local() : nullptr; | ||
| } | ||
|
|
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| void JfrContext::set_used_context_size(uint8_t size) { | ||
| assert(size <= 8, "max context size is 8"); | ||
| _size = size; | ||
| } | ||
|
|
||
| uint64_t JfrContext::get_and_set_context(uint8_t idx, uint64_t value) { | ||
| JfrThreadLocal* jfrTLocal = getThreadLocal(); | ||
| if (jfrTLocal != nullptr) { | ||
| uint64_t old_value = 0; | ||
| jfrTLocal->get_context(&old_value, 1, idx); | ||
| jfrTLocal->set_context(&value, 1, idx); | ||
| return old_value; | ||
| } | ||
| return 0; | ||
| } | ||
|
|
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| uint8_t JfrContext::get_all_context(uint64_t* data, uint8_t length) { | ||
| JfrThreadLocal* jfrTLocal = getThreadLocal(); | ||
| if (jfrTLocal != nullptr) { | ||
| return jfrTLocal->get_context(data, MIN(_size, length), 0); | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
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| uint8_t JfrContext::get_context(uint64_t** data) { | ||
| void* buffer = get_thread_context_buffer(); | ||
| if (buffer) { | ||
| *data = (uint64_t*) buffer; | ||
| return _size; | ||
| } | ||
| return 0; | ||
| } | ||
|
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| uint8_t JfrContext::set_all_context(uint64_t* data, uint8_t length) { | ||
| JfrThreadLocal* jfrTLocal = getThreadLocal(); | ||
| if (jfrTLocal != nullptr) { | ||
| jfrTLocal->set_context(data, MIN(_size, length), 0); | ||
| return length; | ||
| } | ||
|
|
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| return 0; | ||
| } | ||
|
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| void* JfrContext::get_thread_context_buffer() { | ||
| JfrThreadLocal* jfrTLocal = getThreadLocal(); | ||
| if (jfrTLocal != nullptr) { | ||
| return (void*)jfrTLocal->get_context_buffer(); | ||
| } | ||
| return nullptr; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| #ifndef SHARE_JFR_SUPPORT_CONTEXT_HPP | ||
| #define SHARE_JFR_SUPPORT_CONTEXT_HPP | ||
|
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| #include "memory/allStatic.hpp" | ||
| #include "utilities/globalDefinitions.hpp" | ||
|
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| class JfrContext : AllStatic { | ||
| private: | ||
| static uint8_t _size; | ||
| public: | ||
| static void set_used_context_size(uint8_t size); | ||
| static inline uint8_t get_used_context_size() { return _size; } | ||
| static uint64_t get_and_set_context(uint8_t idx, uint64_t value); | ||
| static uint8_t get_all_context(uint64_t* data, uint8_t length); | ||
| static uint8_t set_all_context(uint64_t* data, uint8_t length); | ||
| static uint8_t get_context(uint64_t** data); | ||
| static void* get_thread_context_buffer(); | ||
| }; | ||
|
|
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| #endif // SHARE_JFR_SUPPORT_CONTEXT_HPP |
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