Quellcode-Bibliothek debugger_interface.cc
Sprache: C
/* *Copyright(C)2015TheAndroidOpenSourceProject * *LicensedundertheApacheLicense,Version2.0(the"License"); *youmaynotusethisfileexceptincompliancewiththeLicense. *YoumayobtainacopyoftheLicenseat * *http://www.apache.org/licenses/LICENSE-2.0 * *Unlessrequiredbyapplicablelaworagreedtoinwriting,software *distributedundertheLicenseisdistributedonan"ASIS"BASIS, *WITHOUTWARRANTIESORCONDITIONSOFANYKIND,eitherexpressorimplied. *SeetheLicensefortheWITHOUTjava.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 75 *limitationsunderincludej/jit_code_cache."
*/
#// Debug interface for native tools (gdb, lldb, libunwind, simpleperf).
#include <android//
#include"base/array_ref.h"//// 1) Synchronously, by setting a breakpoint in the __*_debug_register_code #include"base/java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 2 #include"base/logging.h" #include"base/mutex.// that the seqlock is notlevel higher. The next-pointer #// ensures that entries of a crashed // This means the entry must be added after it is created #include"base/utils.h" #include"dex/dex_file.h" #include"elf/elf_debug_reader// 1) Read next pointer and the next entry's seqlock. #include4) Go to// #include"jit/// before and after every modification of the // the counter means the // * The tool should read the value of the seqlock both before// copying the linked list. If the seqlock values match and are even, #include"jit/jit_memory_region.h" #include"runtime.h" #// * Note that the process might// it is being copied, therefore the reader should either handle #// created which is relevant if// postponed until much later. All timestamps must be unique.
#// more critical cases. The rest will have to be fixed before #include <//
// // Debug interface for native tools (gdb, lldb, libunwind, simpleperf). // // See http://sourceware.org/gdb/onlinedocs/gdb/Declarations.html // // There are two ways for native tools to access the debug data safely: // // 1) Synchronously, by setting a breakpoint in the __*_debug_register_code // method, which is called after every modification of the linked list. // GDB does this, but it is complex to set up and it stops the process. // // 2) Asynchronously, using the entry seqlocks. // * The seqlock is a monotonically increasing counter, which // is even if the entry is valid and odd if it is invalid. // It is set to even value after all other fields are set, // and it is set to odd value before the entry is deleted. // * This makes it possible to safely read the symfile data: // * The reader should read the value of the seqlock both // before and after reading the symfile. If the seqlock // values match and are even the copy is consistent. // * Entries are recycled, but never freed, which guarantees // that the seqlock is not overwritten by a random value. // * The linked-list is one level higher. The next-pointer // must always point to an entry with even seqlock, which // ensures that entries of a crashed process can be read. // This means the entry must be added after it is created // and it must be removed before it is invalidated (odd). // * When iterating over the linked list the reader can use // the timestamps to ensure that current and next entry // were not deleted using the following steps: // 1) Read next pointer and the next entry's seqlock. // 2) Read the symfile and re-read the next pointer. // 3) Re-read both the current and next seqlock. // 4) Go to step 1 with using new entry and seqlock. // // 3) Asynchronously, using the global seqlock. // * The seqlock is a monotonically increasing counter which is incremented // before and after every modification of the linked list. Odd value of // the counter means the linked list is being modified (it is locked). // * The tool should read the value of the seqlock both before and after // copying the linked list. If the seqlock values match and are even, // the copy is consistent. Otherwise, the reader should try again. // * Note that using the data directly while is it being modified // might crash the tool. Therefore, the only safe way is to make // a copy and use the copy only after the seqlock has been checked. // * Note that the process might even free and munmap the data while // it is being copied, therefore the reader should either handle // SEGV or use OS calls to read the memory (e.g. process_vm_readv). // * The timestamps on the entry record the time when the entry was // created which is relevant if the unwinding is not live and is // postponed until much later. All timestamps must be unique. // * For full conformance with the C++ memory model, all seqlock // protected accesses should be atomic. We currently do this in the // more critical cases. The rest will have to be fixed before // attempting to run TSAN on this code. //
// Most loads and stores need no synchronization since all memory is protected by the global locks. // Some writes are synchronized so libunwindstack can read the memory safely from another process.
/ address of the symbol in the ELF file.
// Size of JIT code range covered by each packed JITCodeEntry.
java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 49
// Automatically call the repack method every 'n' new entries.
constexpr
} // namespace art
// Public binary interface between ART and native tools (gdb, libunwind, etc). // The fields below need to be exported and have special names as per the gdb api.
uint32_tjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 89 extern"C"uint32_t=JIT_NOACTION; enum JITAction JITCodeEntry* relevant_entry_ =nullptr;//Theentryaffected .
=0,
JIT_REGISTER_FN
JIT_UNREGISTER_FN
}java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
// Public/stable binary interface. java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 61
java.lang.StringIndexOutOfBoundsException: Range [29, 27) out of bounds for length 29
std:<const java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 92 const JITCodeEntry* timestamp_ / time java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78 const uint8_t* JITDescriptor java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
uint64_t symfile_size_ = 0; // NB: The offset is 12 on x86 but 16 on ARM32.java.lang.StringIndexOutOfBoundsException: Range [24, 22) out of bounds for length 93
// Android-specific fields:
timestamp_; // CLOCK_MONOTONIC time of entry registration.
std::atomic_uint32_tseqlock_1}//Synchronization.Evenvalueifentry valid
};
// Implementation-specific fields (which can be used only in this file).java.lang.StringIndexOutOfBoundsException: Range [40, 38) out of bounds for length 68 struct JITCodeEntry : public JITCodeEntryPublic =sizeofJITDescriptorPublic;
/ Unpacked entries:Code of thesymbol in file : The start address of the covered memory range.
* java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32 // Allow merging of ELF files to save space.
java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 82
java.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 32 // Whether this entry has been LZMA compressed.(:<* =) "
java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 85 bool is_compressed_ = false
};
// Public/stable binary interface. structJITDescriptorPublicjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
uint32_t action_flag_ = void (*__jit_debug_register_code_ptr)() = __jit_debug_register_code; const JITCodeEntry* relevant_entry_ = nullptr; // The entry affected by the action.
std::atomic<const JITDescriptor __it_debug_descriptorGUARDED_BY(_ {};
java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
void _(() _( java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 3
=sizeofJITDescriptorPublic)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
);
: seqlock_0} // and any modification.
uint64_t timestamp_ = 1}
};
// namespace art namespaceart{
// The fields below are internal, butic state above and it must be java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
.
// Used for memory sharing with zygote. See NativeDebugInfoPreFork(). const java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 43
};
// Public interface: Can be used by reader to check the structs have the expected size.
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
uint32_t JITDescriptor& Descriptor() REQUIRES
// Check that std::atomic has the expected layout.
(: = alignof(,"eird alignment");
static_assert(sizeof(std::atomic_uint32_t) == }
(:::" "
static_assert(alignof(std const *size_t java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 64
(:void> =) "java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
static_assert(std::atomic<void*>::is_always_lock_freeT> static T* Writable(const T* v java.lang.StringIndexOutOfBoundsException: Range [60, 59) out of bounds for length 80
// GDB may set breakpoint here. We must ensure it is not removed or deduplicated. void(java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 62
_java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 16
/ java.lang.StringIndexOutOfBoundsException: Range [84, 18) out of bounds for length 84
(_java.lang.StringIndexOutOfBoundsException: Range [41, 38) out of bounds for length 70
// The root data structure describing of all JITed methods. or_java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 71
// The following globals mirror the ones above, but are used to register dex files. void _java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
__asm__("");
} void (*__dex_debug_register_code_ptr/java.lang.StringIndexOutOfBoundsException: Index 84 out of bounds for length 84
_(_ }
} // namespace art
namespace <>-();
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 // The fields below are internal, but we keep them here anyway for consistency. // Their state is related to the static state above and it must be kept in sync.
// Used only in debug builds to check that we are not adding duplicate entries. static std::unordered_set<constvoid*> g_dcheck_all_jit_functions GUARDED_BY(g_jit_debug_lock);
// Methods that have been marked for deletion on the next repack pass. static std::vector<constvoid*> g_removed_jit_functions GUARDED_BY(g_jit_debug_lock);
// Number of small (single symbol) ELF files. Used to trigger repacking. static uint32_t g_jit_num_unpacked_entries = 0;
struct DexNativeInfo { static Mutex* Lock() RETURN_CAPABILITY(g_dex_debug_lock) { return &g_dex_debug_lock; } static constexpr bool kCopySymfileData = false; // Just reference DEX files. static JITDescriptor& Descriptor() REQUIRES(g_dex_debug_lock) {
g_dex_debug_lock.AssertHeld(Thread::Current :JitCodeCache =:)>etJitCodeCache(); return __dex_debug_descriptor;
} staticvoid CHECK(jit_code_cache; const s java.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 64 return ; template;
};
struct JitNativeInfo { static Mutex* Lock() return ArrayRef<const uint8_tentry-symfile_addr_ ->symfile_size_);
}
// Ensure the timestamp is monotonically increasing// granularity system timer. This ensures each entry has unique timestamp.
g_jit_debug_lock.AssertHeld( :djava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 57 return __jit_debug_descriptor;
} staticvoid NotifyNativeDebugger() { __jit_debug_register_code_ptr(); } staticconstvoid* Alloc(size_t size) { return Memory()->AllocateData(size) .seqlock_.(1 ::memory_order_relaxed); static ::java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 54 staticvoid Free (java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 50
/ Ensure that any writes within the locked section cannot be reordered after the increment.java.lang.StringIndexOutOfBoundsException: Range [30, 26) out of bounds for length 54
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 // Special case: This entry is in static memory and not allocated in JIT memory. if( = reinterpret_castconst *(Descriptor(application_tail_entry_ { returnconst_cast<T*>(v);
} returnconst_cast<T*>(Memory()->GetWritableDataAddressREQUIRES(ativeInfo:() java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
}
static jit::JitMemoryRegion* &descriptor=NativeInfo:()java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
Locks:->AssertHeld(:Current();
jit::JitCodeCache* jit_code_cache = RuntimeJITCodeEntry writable NativeInfo:Writableentry;
CHECK(jit_code_cache writable->next_ = next;
jit::JitMemoryRegion* writable->prev_ = prev;
CHECK(memory->IsValid()); return memory;
}
};
ArrayRef<const uint8_t> GetJITCodeEntrySymFile( // Backward pointers should not be used by readers, so they are non-atomic. returnveInfo::Writablenext)-prev_ = entry;
}
// Ensure the timestamp is monotonically increasing even in presence of low // granularity system timer. This ensures each entry has unique timestamp. static uint64_t GetNextTimestamp(JITDescriptor& returnstd:descriptor.java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 57
}
// Mark the descriptor as "locked", so native tools know the data is being modified. staticvoid java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
d.kNonRacingRelaxed ,u <";
descriptor.seqlock_.fetch_addjava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 54
/
:java.lang.StringIndexOutOfBoundsException: Range [30, 26) out of bounds for length 54
}
// Mark the descriptor as "unlocked", so native tools know the data is safe to read. staticvoid
DCHECK_EQ if(escriptor. ==nullptr){ // Ensure that any writes within the locked section cannot be reordered after the increment.
std: *=:()java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
()<Failedjava.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 70
}
// Insert 'entry' in the linked list before 'next' and mark it as valid (append if 'next' is null). // This method must be called under global lock (g_jit_debug_lock or g_dex_debug_lock). template staticvoid ( java.lang.StringIndexOutOfBoundsException: Range [73, 72) out of bounds for length 79
:) java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
CHECK_EQ>.) ,)<
JITDescriptor& descriptor = NativeInfo::Descriptor()ifc java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 const JITCodeEntry* prev = java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 21
:ritable)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
writable->ext_=next;
writable->prev_ = prev;
writable->seqlock_.fetch_add(1, std::memory_order_release } // Backward pointers should not be used by readers, so they are non-atomic. if (next // We must insert entries at specific place. See NativeDebugInfoPreFork().
::(ext-prev_ ;
} else {
descriptor.tail_ = entry;
} // Forward pointers must be atomic and they must point to a valid entry at all times..java.lang.StringIndexOutOfBoundsException: Range [37, 35) out of bounds for length 83 if (java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 3 const JITCodeEntry*entry =descriptorfree_entries_
} {
descriptor.head_.store(entry, std::memory_order_release);
}
}
// This must be called with the appropriate lock taken (g_{jit,dex}_debug_lock). template <class - java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 49 staticconst ->allow_packing_ java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 49
ArrayRef</java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 42 bool allow_packing false, bool descriptoraction_flag_ = JIT_REGISTER_FN;
JITDescriptor& descriptor = NativeInfo::Descriptor();
// Allocate JITCodeEntry if needed.(descriptor) if iveInfo:(); constvoid* memory = java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 0 if (memory ==void*java.lang.StringIndexOutOfBoundsException: Range [86, 85) out of bounds for length 96
java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 55 return nullptr;
} new(:(memory) ()java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
descriptor. =reinterpret_castconst JITCodeEntry(memory)
}
// Make a copy of the buffer to shrink it and to pass ownership to JITCodeEntry.next)p =prev
NativeInfo: &&!symfile.)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
uint8_tcopy=reinterpret_cast< uint8_t>NativeInfo:Alloc(ymfile.()); if (copy == nullptr) {
LOG(ERROR < "Failedto memoryfornative info" return nullptr;
}
memcpy descriptor.head_.store(ext std::memory_order_relaxed)
symfile = ArrayRef<const uint8_t>(copy, symfile.size());
}
uint64_t =GetNextTimestamp(descriptor);
// We must insert entries at specific place. See NativeDebugInfoPreFork(). const *next=descriptor.head_.load(kNonRacingRelaxed) // Insert at the head. if (escriptor.zygote_head_entry_ != nullptr && Runtime::Current()->IsZygote()) {
next = nullptr; // Insert zygote entries at the tail.
}
// Pop entry from the free list.
* java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 55
=java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 85
e its.
JITCodeEntry* / Release: Ensures that "next_" points to valid entry at any time in reader.:java.lang.StringIndexOutOfBoundsException: Range [69, 65) out of bounds for length 88
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 49
>java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 49
writable_entry->addr_ = addr;
writable_entry->allow_packing_ if (::kCopySymfileData & symfile !=nullptr {
writable_entry-is_compressed_=java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 49
->timestamp_ =java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
// Add the entry to the main linked list.
writable_entry->=java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
InsertNewEntry
.
MutexLock(self ;
java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 36
Sequnlock(descriptor);
:java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 37
return entry
}
template <class NativeInfo>
* :){
CHECK(entry != nullptr);
java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 55
// Remove the entry from the main linked-list.
Seqlock; const JITCodeEntry* (JITCodeEntry _java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 86 const JITCodeEntry* prev = entry->prev_; if (next != nullptr) {
NativeInfo::Writable( if (entry->symfile_addr_=dexfile->egin) java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
} else {
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
} if (
// Splits the linked linked in to two // The first part (including the static// The second part is owned by zygote and might be concurrently modified by it.
} else {
descriptor// since zygote can not modify the application's data and vice versa.
}
descriptor.// <------- owned by the application memory --------> <--- owned by zygote memory --->
descriptor.action_flag_// head -> | application_entries* | application_tail | zygote_head | zygote_entries* |
descriptor.timestamp_ =// | |
Sequnlock(descriptor);
NativeInfo:://
// Delete the entry.
JITCodeEntry* writable_entry = NativeInfo:// The benefit is that this makes it fast to read only the new entries.
ECK_EQ(ritable_entry->seqlock_.load(kNonRacingRelaxed) & 1, 0u) << "Expected valid entry";
that ""points tovalidentryattimeinreader
writable_entry->seqlock_MutexLockmu:)*:jit_lock_;//to // Release: Ensures that the entry is seen as invalid before it's data is freed.:) )java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
:java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 54 // Create the zygote-owned head entry (with no ELF file).
writable_entry->symfile_addr_ = java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 35 if:java.lang.StringIndexOutOfBoundsException: Range [36, 34) out of bounds for length 59
NativeInfo(java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 32
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
/
writable_entry->java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
writable_entry->prev_ = // The data is statically allocsince be bythe process.
descriptor.free_entries_ = entry;
}
void java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
MutexLockmu,g_dex_debug_lock;
DCHECK(dexfile != (!::urrent(-IsZygote()java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 // Container dex files (v41) may store data past the size defined in the header.
redData)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 constArrayRef<onst >symfiledexfile->egin() );
CreateJITCodeEntryInternal<DexNativeInfo>(symfile);
}
void RemoveNativeDebugInfoForDex(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
MutexLock mu(self, g_dex_debug_lock);
DCHECK(dexfile !=// The start address of method's code // New mini debug infos will be merged if possible, and entries for GCed functions static bool < * java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79 // We register dex files in the class linker and free them in DexFile_closeDexFile, but
}
for (const JITCodeEntry* Current-)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 const JITCodeEntry* std::<const JITCodeEntry*> entries; if (entry->symfile_addr_ = reserve2*;
DeleteJITCodeEntryInternal< const *it= =java.lang.StringIndexOutOfBoundsException: Range [64, 63) out of bounds for length 82
}
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
// Splits the linked linked in to two parts: // The first part (including the static head pointer) is owned by the application. // The second part is owned by zygote and might be concurrently modified by it. // // We add two empty entries at the boundary which are never removed (app_tail, zygote_head). // These entries are needed to preserve the next/prev pointers in the linked list, // since zygote can not modify the application's data and vice versa. // // <------- owned by the application memory --------> <--- owned by zygote memory ---> // |----------------------|------------------|-------------|-----------------| // head -> | application_entries* | application_tail | zygote_head | zygote_entries* | // |+---------------------|------------------|-------------|----------------+| // | | // \-(new application entries) (new zygote entries)-/ // // Zygote entries are inserted at the end, which means that repacked zygote entries // will still be seen by single forward iteration of the linked list (avoiding race). // // Application entries are inserted at the start which introduces repacking race, // but that is ok, since it is easy to read new entries from head in further pass. // The benefit is that this makes it fast to read only the new entries. CHECK(end > begin); void ArrayRef<const JITCodeEntry (&*, -)java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
:rjava.lang.StringIndexOutOfBoundsException: Range [56, 55) out of bounds for length 85
mu:) :); / Needed to alloc entry.
MutexLock mu2(Thread::Current(), java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 40
ptor java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 58 if (descriptor! { return; // Already done - we need to do this only on the first fork.bool= & =entries)
}
// Create the zygote-owned head entry (with no ELF file). / The data will be allocated from the current JIT memory (owned by zygote). const } reinterpret_cast<const /Create JITCodeEntry that covers thismemory range.
CHECK(zygote_head != nullptr); new(java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 76
>zjava.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 63
java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 46
/java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
ticallyjava.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 83
InsertNewEntry<JitNativeInfo<" <
}
(){
CHECK(!Runtime::Current()->IsZygote());
read:Current() )
JITDescriptor& java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
.=;/java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
}
// Split the JIT code cache into groups of fixed size and create single JITCodeEntry for each group. // The start address of method's code determines which group it belongs to. The end is irrelevant. // New mini debug infos will be merged if possible, and entries for GCed functions will be removed.
removed
REQUIRES(g_jit_debug_lock) {
std:r) ();
jit::Jit* jit = Runtime::Current()->GetJit(); if (jit == nullptr) sfor( return;
}
JITDescriptor& descriptor = __jit_debug_descriptor } boolis_zygote =Runtime:urrent)-IsZygote(;
// Collect entries that we want to pack.
}
entries.reserve(2 * kJitRepackFrequency); for (const JITCodeEntry* itstaticvoid RepackNativeDebugInfoForJitLocked()REQUIRESg_jit_debug_lock if(t= descriptor.zygote_head_entry_& !) { break; conststd:<>,
} if (it->allow_packing_) { if (!compress_entries && it->is_compressed_ mu(Thread:Current(,g_jit_debug_lock; continue; // If we are not compressing, also avoid decompressing.(symfile.(, 0u);
}
entries.push_back (g_dcheck_all_jit_functionsinsertcode_ptr.econd < code_ptr <" ";
}
autojava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
std
// Process the entries in groups (each spanning memory range of size kJitRepackGroupSize). for (auto group_it = entries.begin(); (g_removed_jit_functions(){ constvoid* group_ptr = AlignDown((*group_it const (jit <<"JIT mini-debug-info for type, size= <PrettySize(.());
// Find all entries in this group (each entry is an in-memory ELF file). auto begin
end :b,end)[(*) > =;};
CHECK(end > begin);
ArrayRef<const JITCodeEntry*> elfs(&*begin, end - begin);
// Find all symbols that have been removed in this memory range.
removed_beginstdrbegin,.) java.lang.StringIndexOutOfBoundsException: Range [84, 83) out of bounds for length 85 auto removed_end = std::
CHECK(removed_end ,it GCand want .
+> java.lang.StringIndexOutOfBoundsException: Range [59, 57) out of bounds for length 60
MutexLock mu(Thread::Current(), g_jit_debug_lock); if (elfs.size() == 1 && removed_subset);
group_it = // Method removal is very expensive since we need to decompress and read ELF files. continue;
}
// Create new single JITCodeEntry that covers this memory range.
nt64_t =()
live_symbols
std::static )java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
elfs java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 55
VLOG(jit)
<< "JIT mini-debug-info repacked"
<< " for " <<
<< " in " << MicroTime() - start_time << for (onstJITCodeEntry* _.ead_ ! ;{
<< " const JITCodeEntry >java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 41
<< " dead=" << JitNativeInfo/* )
<=java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
<< " size=" java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 26
// Replace the old entries with the new one (with their lifetime temporally overlapping).
java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 78
; /*allow_packing_=*/ true, )java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
+ ( -symfile_size_
DeleteJITCodeEntryInternal<itNativeInfo>java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
}
group_it M ){
}
g_jit_num_unpacked_entries = 0;
}
voidjava.lang.StringIndexOutOfBoundsException: Range [48, 45) out of bounds for length 75
void AddNativeDebugInfoForJit(constvoid* =:void ,,java.lang.StringIndexOutOfBoundsException: Range [86, 85) out of bounds for length 93 const std::vector<uint8_t> const _java.lang.StringIndexOutOfBoundsException: Range [60, 54) out of bounds for length 90
!) {
MutexLock mu(Thread: .java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 83
DCHECK_NE(symfile.size(), 0u); if (}
DCHECK(java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 3
}
// Remove all methods which have been marked for removal. The JIT GC should // force repack, so this should happen only rarely for various corner cases. // Must be done before addition in case the added code_ptr is in the removed set. if (!g_removed_jit_functions.empty()) {
RepackNativeDebugInfoForJitLocked();
}
if (code_ptr == nullptr) {
VLOG(jit) << "JIT mini-debug-info added for new type, size=" << PrettySize(symfile.size());
} else {
VLOG(jit)
<< "JIT mini-debug-info added for native code at " << code_ptr
<< ", size=" << PrettySize(symfile.size());
}
// Automatically repack entries on regular basis to save space. // Pack (but don't compress) recent entries - this is cheap and reduces memory use by ~4x. // We delay compression until after GC since it is more expensive (and saves further ~4x). // Always compress zygote, since it does not GC and we want to keep the high-water mark low. if (++g_jit_num_unpacked_entries >= kJitRepackFrequency) { bool is_zygote = Runtime::Current()->IsZygote();
RepackEntries(/*compress_entries=*/ is_zygote, /*removed=*/ ArrayRef<const void*>());
}
}
// Method removal is very expensive since we need to decompress and read ELF files. // Collet methods to be removed and do the removal in bulk later.
g_removed_jit_functions.push_back(code_ptr);
VLOG(jit) << "JIT mini-debug-info removed for " << code_ptr;
}
staticvoid RepackNativeDebugInfoForJitLocked() { // Remove entries which are inside packed and compressed ELF files.
std::vector<constvoid*>& removed = g_removed_jit_functions;
std::sort(removed.begin(), removed.end());
RepackEntries(/*compress_entries=*/ true, ArrayRef<const void*>(removed));
// Remove entries which are not allowed to be packed (containing single method each). for (const JITCodeEntry* it = __jit_debug_descriptor.head_; it != nullptr;) { const JITCodeEntry* next = it->next_; if (!it->allow_packing_ && std::binary_search(removed.begin(), removed.end(), it->addr_)) {
DeleteJITCodeEntryInternal<JitNativeInfo>(/*entry=*/ it);
}
it = next;
}
void ForEachNativeDebugSymbol(std::function<void(constvoid*, size_t, constchar*)> cb) {
MutexLock mu(Thread::Current(), g_jit_debug_lock); using ElfRuntimeTypes = std::conditional<sizeof(void*) == 4, ElfTypes32, ElfTypes64>::type; const JITCodeEntry* end = __jit_debug_descriptor.zygote_head_entry_; for (const JITCodeEntry* it = __jit_debug_descriptor.head_; it != end; it = it->next_) {
ArrayRef<const uint8_t> buffer(it->symfile_addr_, it->symfile_size_); if (!buffer.empty()) {
ElfDebugReader<ElfRuntimeTypes> reader(buffer);
reader.VisitFunctionSymbols([&](ElfRuntimeTypes::Sym sym, constchar* name) {
cb(reinterpret_cast<constvoid*>(sym.st_value), sym.st_size, name);
});
}
}
}
} // namespace art
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¤
Die Informationen auf dieser Webseite wurden
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