diff options
Diffstat (limited to 'compiler/driver/compiler_driver.h')
| -rw-r--r-- | compiler/driver/compiler_driver.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h index fa1b8f9854..cd6b5fab02 100644 --- a/compiler/driver/compiler_driver.h +++ b/compiler/driver/compiler_driver.h @@ -34,6 +34,7 @@ #include "runtime.h" #include "safe_map.h" #include "thread_pool.h" +#include "utils/dedupe_set.h" namespace art { @@ -303,6 +304,11 @@ class CompilerDriver { void RecordClassStatus(ClassReference ref, mirror::Class::Status status) LOCKS_EXCLUDED(compiled_classes_lock_); + std::vector<uint8_t>* DeduplicateCode(const std::vector<uint8_t>& code); + std::vector<uint8_t>* DeduplicateMappingTable(const std::vector<uint8_t>& code); + std::vector<uint8_t>* DeduplicateVMapTable(const std::vector<uint8_t>& code); + std::vector<uint8_t>* DeduplicateGCMap(const std::vector<uint8_t>& code); + private: // Compute constant code and method pointers when possible void GetCodeAndMethodForDirectCall(InvokeType type, InvokeType sharp_type, @@ -439,6 +445,32 @@ class CompilerDriver { bool support_boot_image_fixup_; + // DeDuplication data structures, these own the corresponding byte arrays. + class DedupeHashFunc { + public: + size_t operator()(const std::vector<uint8_t>& array) const { + // Take a random sample of bytes. + static const size_t kSmallArrayThreshold = 16; + static const size_t kRandomHashCount = 16; + size_t hash = 0; + if (array.size() < kSmallArrayThreshold) { + for (auto c : array) { + hash = hash * 54 + c; + } + } else { + for (size_t i = 0; i < kRandomHashCount; ++i) { + size_t r = i * 1103515245 + 12345; + hash = hash * 54 + array[r % array.size()]; + } + } + return hash; + } + }; + DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc> dedupe_code_; + DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc> dedupe_mapping_table_; + DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc> dedupe_vmap_table_; + DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc> dedupe_gc_map_; + DISALLOW_COPY_AND_ASSIGN(CompilerDriver); }; |