diff options
Diffstat (limited to 'Source/WTF/wtf/text/StringImpl.cpp')
| -rw-r--r-- | Source/WTF/wtf/text/StringImpl.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Source/WTF/wtf/text/StringImpl.cpp b/Source/WTF/wtf/text/StringImpl.cpp index a29263218..c06a966e7 100644 --- a/Source/WTF/wtf/text/StringImpl.cpp +++ b/Source/WTF/wtf/text/StringImpl.cpp @@ -28,6 +28,7 @@ #include "AtomicString.h" #include "StringBuffer.h" #include "StringHash.h" +#include <wtf/MemoryInstrumentation.h> #include <wtf/StdLibExtras.h> #include <wtf/WTFThreadData.h> #include <wtf/unicode/CharacterNames.h> @@ -1791,4 +1792,24 @@ size_t StringImpl::sizeInBytes() const return size + sizeof(*this); } +void StringImpl::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const +{ + size_t selfSize = sizeof(StringImpl); + + // Count size used by internal buffer but skip strings that were constructed from literals. + if ((m_hashAndFlags & BufferInternal) && !hasTerminatingNullCharacter()) + // Three cases are covered here: + // 1) a normal 8-bit string with internal storage (BufferInternal) + // 2) a normal 16-bit string with internal storage (BufferInternal) + // 3) empty unique string with length = 0 (BufferInternal) + selfSize += m_length * (m_hashAndFlags & s_hashFlag8BitBuffer ? sizeof(LChar) : sizeof(UChar)); + + MemoryClassInfo info(memoryObjectInfo, this, 0, selfSize); + + if (m_hashAndFlags & BufferSubstring) + info.addMember(m_substringBuffer); + else if (m_hashAndFlags & s_hashFlagHas16BitShadow) // Substring never has its own shadow. + info.addRawBuffer(m_copyData16, (m_length + (hasTerminatingNullCharacter() ? 1 : 0)) * sizeof(UChar)); +} + } // namespace WTF |