diff options
Diffstat (limited to 'indra/llcommon/llmemory.cpp')
| -rw-r--r-- | indra/llcommon/llmemory.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/indra/llcommon/llmemory.cpp b/indra/llcommon/llmemory.cpp index 849867586a..749b66b472 100644 --- a/indra/llcommon/llmemory.cpp +++ b/indra/llcommon/llmemory.cpp @@ -35,6 +35,7 @@ # include <sys/types.h> # include <mach/task.h> # include <mach/mach_init.h> +#include <mach/mach_host.h> #elif LL_LINUX # include <unistd.h> #endif @@ -109,6 +110,50 @@ void LLMemory::updateMemoryInfo() { sAvailPhysicalMemInKB = U32Kilobytes(0); } + +#elif defined(LL_DARWIN) + task_vm_info info; + mach_msg_type_number_t infoCount = TASK_VM_INFO_COUNT; + // MACH_TASK_BASIC_INFO reports the same resident_size, but does not tell us the reusable bytes or phys_footprint. + if (task_info(mach_task_self(), TASK_VM_INFO, reinterpret_cast<task_info_t>(&info), &infoCount) == KERN_SUCCESS) + { + // Our Windows definition of PagefileUsage is documented by Microsoft as "the total amount of + // memory that the memory manager has committed for a running process", which is rss. + sAllocatedPageSizeInKB = U32Bytes(info.resident_size); + + // Activity Monitor => Inspect Process => Real Memory Size appears to report resident_size + // Activity monitor => main window memory column appears to report phys_footprint, which spot checks as at least 30% less. + // I think that is because of compression, which isn't going to give us a consistent measurement. We want uncompressed totals. + // + // In between is resident_size - reusable. This is what Chrome source code uses, with source comments saying it is 'the "Real Memory" value + // reported for the app by the Memory Monitor in Instruments.' It is still about 8% bigger than phys_footprint. + // + // (On Windows, we use WorkingSetSize.) + sAllocatedMemInKB = U32Bytes(info.resident_size - info.reusable); + } + else + { + LL_WARNS() << "task_info failed" << LL_ENDL; + } + + // Total installed and available physical memory are properties of the host, not just our process. + vm_statistics64_data_t vmstat; + mach_msg_type_number_t count = HOST_VM_INFO64_COUNT; + mach_port_t host = mach_host_self(); + vm_size_t page_size; + host_page_size(host, &page_size); + kern_return_t result = host_statistics64(host, HOST_VM_INFO64, reinterpret_cast<host_info_t>(&vmstat), &count); + if (result == KERN_SUCCESS) { + // This is what Chrome reports as 'the "Physical Memory Free" value reported by the Memory Monitor in Instruments.' + // Note though that inactive pages are not included here and not yet free, but could become so under memory pressure. + sAvailPhysicalMemInKB = U32Bytes(vmstat.free_count * page_size); + sMaxPhysicalMemInKB = LLMemoryInfo::getHardwareMemSize(); + } + else + { + LL_WARNS() << "task_info failed" << LL_ENDL; + } + #else //not valid for other systems for now. sAllocatedMemInKB = U64Bytes(LLMemory::getCurrentRSS()); |