path: root/src/gc/gcenv.unix.cpp

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#include "env/gcenv.structs.h"
#include "env/gcenv.base.h"
#include "env/gcenv.os.h"

// Initialize the interface implementation
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::Initialize()
{
    throw nullptr;
}

// Shutdown the interface implementation
void GCToOSInterface::Shutdown()
{
    throw nullptr;
}

// Get numeric id of the current thread if possible on the 
// current platform. It is indended for logging purposes only.
// Return:
//  Numeric id of the current thread or 0 if the 
uint64_t GCToOSInterface::GetCurrentThreadIdForLogging()
{
    throw nullptr;
}

// Get id of the process
uint32_t GCToOSInterface::GetCurrentProcessId()
{
    throw nullptr;
}

// Set ideal affinity for the current thread
// Parameters:
//  affinity - ideal processor affinity for the thread
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::SetCurrentThreadIdealAffinity(GCThreadAffinity* affinity)
{
    throw nullptr;
}

// Get the number of the current processor
uint32_t GCToOSInterface::GetCurrentProcessorNumber()
{
    throw nullptr;
}

// Check if the OS supports getting current processor number
bool GCToOSInterface::CanGetCurrentProcessorNumber()
{
    throw nullptr;
}

// Flush write buffers of processors that are executing threads of the current process
void GCToOSInterface::FlushProcessWriteBuffers()
{
    throw nullptr;
}

// Break into a debugger
void GCToOSInterface::DebugBreak()
{
    throw nullptr;
}

// Get number of logical processors
uint32_t GCToOSInterface::GetLogicalCpuCount()
{
    throw nullptr;
}

// Causes the calling thread to sleep for the specified number of milliseconds
// Parameters:
//  sleepMSec   - time to sleep before switching to another thread
void GCToOSInterface::Sleep(uint32_t sleepMSec)
{
    throw nullptr;
}

// Causes the calling thread to yield execution to another thread that is ready to run on the current processor.
// Parameters:
//  switchCount - number of times the YieldThread was called in a loop
void GCToOSInterface::YieldThread(uint32_t switchCount)
{
    throw nullptr;
}

// Reserve virtual memory range.
// Parameters:
//  size      - size of the virtual memory range
//  alignment - requested memory alignment, 0 means no specific alignment requested
//  flags     - flags to control special settings like write watching
// Return:
//  Starting virtual address of the reserved range
void* GCToOSInterface::VirtualReserve(size_t size, size_t alignment, uint32_t flags)
{
    throw nullptr;
}

// Release virtual memory range previously reserved using VirtualReserve
// Parameters:
//  address - starting virtual address
//  size    - size of the virtual memory range
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::VirtualRelease(void* address, size_t size)
{
    throw nullptr;
}

// Commit virtual memory range. It must be part of a range reserved using VirtualReserve.
// Parameters:
//  address - starting virtual address
//  size    - size of the virtual memory range
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::VirtualCommit(void* address, size_t size)
{
    throw nullptr;
}

// Decomit virtual memory range.
// Parameters:
//  address - starting virtual address
//  size    - size of the virtual memory range
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::VirtualDecommit(void* address, size_t size)
{
    throw nullptr;
}

// Reset virtual memory range. Indicates that data in the memory range specified by address and size is no
// longer of interest, but it should not be decommitted.
// Parameters:
//  address - starting virtual address
//  size    - size of the virtual memory range
//  unlock  - true if the memory range should also be unlocked
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::VirtualReset(void * address, size_t size, bool unlock)
{
    throw nullptr;
}

// Check if the OS supports write watching
bool GCToOSInterface::SupportsWriteWatch()
{
    throw nullptr;
}

// Reset the write tracking state for the specified virtual memory range.
// Parameters:
//  address - starting virtual address
//  size    - size of the virtual memory range
void GCToOSInterface::ResetWriteWatch(void* address, size_t size)
{
    throw nullptr;
}

// Retrieve addresses of the pages that are written to in a region of virtual memory
// Parameters:
//  resetState         - true indicates to reset the write tracking state
//  address            - starting virtual address
//  size               - size of the virtual memory range
//  pageAddresses      - buffer that receives an array of page addresses in the memory region
//  pageAddressesCount - on input, size of the lpAddresses array, in array elements
//                       on output, the number of page addresses that are returned in the array.
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::GetWriteWatch(bool resetState, void* address, size_t size, void** pageAddresses, uintptr_t* pageAddressesCount)
{
    throw nullptr;
}

// Get size of the largest cache on the processor die
// Parameters:
//  trueSize - true to return true cache size, false to return scaled up size based on
//             the processor architecture
// Return:
//  Size of the cache
size_t GCToOSInterface::GetLargestOnDieCacheSize(bool trueSize)
{
    throw nullptr;
}

// Get affinity mask of the current process
// Parameters:
//  processMask - affinity mask for the specified process
//  systemMask  - affinity mask for the system
// Return:
//  true if it has succeeded, false if it has failed
// Remarks:
//  A process affinity mask is a bit vector in which each bit represents the processors that
//  a process is allowed to run on. A system affinity mask is a bit vector in which each bit
//  represents the processors that are configured into a system.
//  A process affinity mask is a subset of the system affinity mask. A process is only allowed
//  to run on the processors configured into a system. Therefore, the process affinity mask cannot
//  specify a 1 bit for a processor when the system affinity mask specifies a 0 bit for that processor.
bool GCToOSInterface::GetCurrentProcessAffinityMask(uintptr_t* processMask, uintptr_t* systemMask)
{
    throw nullptr;
}

// Get number of processors assigned to the current process
// Return:
//  The number of processors
uint32_t GCToOSInterface::GetCurrentProcessCpuCount()
{
    throw nullptr;
}

// Return the size of the user-mode portion of the virtual address space of this process.
// Return:
//  non zero if it has succeeded, 0 if it has failed
size_t GCToOSInterface::GetVirtualMemoryLimit()
{
    throw nullptr;
}

// Get the physical memory that this process can use.
// Return:
//  non zero if it has succeeded, 0 if it has failed
// Remarks:
//  If a process runs with a restricted memory limit, it returns the limit. If there's no limit 
//  specified, it returns amount of actual physical memory.
uint64_t GCToOSInterface::GetPhysicalMemoryLimit()
{
    throw nullptr;
}

// Get memory status
// Parameters:
//  memory_load - A number between 0 and 100 that specifies the approximate percentage of physical memory
//      that is in use (0 indicates no memory use and 100 indicates full memory use).
//  available_physical - The amount of physical memory currently available, in bytes.
//  available_page_file - The maximum amount of memory the current process can commit, in bytes.
void GCToOSInterface::GetMemoryStatus(uint32_t* memory_load, uint64_t* available_physical, uint64_t* available_page_file)
{
    throw nullptr;
}

// Get a high precision performance counter
// Return:
//  The counter value
int64_t GCToOSInterface::QueryPerformanceCounter()
{
    throw nullptr;
}

// Get a frequency of the high precision performance counter
// Return:
//  The counter frequency
int64_t GCToOSInterface::QueryPerformanceFrequency()
{
    throw nullptr;
}

// Get a time stamp with a low precision
// Return:
//  Time stamp in milliseconds
uint32_t GCToOSInterface::GetLowPrecisionTimeStamp()
{
    throw nullptr;
}


// Create a new thread for GC use
// Parameters:
//  function - the function to be executed by the thread
//  param    - parameters of the thread
//  affinity - processor affinity of the thread
// Return:
//  true if it has succeeded, false if it has failed
bool GCToOSInterface::CreateThread(GCThreadFunction function, void* param, GCThreadAffinity* affinity)
{
    throw nullptr;
}

// Initialize the critical section
void CLRCriticalSection::Initialize()
{
    throw nullptr;
}

// Destroy the critical section
void CLRCriticalSection::Destroy()
{
    throw nullptr;
}

// Enter the critical section. Blocks until the section can be entered.
void CLRCriticalSection::Enter()
{
    throw nullptr;
}

// Leave the critical section
void CLRCriticalSection::Leave()
{
    throw nullptr;
}