rocm-systems/src/core/hsa_interceptor.h

/******************************************************************************
MIT License

Copyright (c) 2018 ROCm Core Technology

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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*******************************************************************************/

#ifndef _SRC_CORE_HSA_INTERCEPTOR_H
#define _SRC_CORE_HSA_INTERCEPTOR_H

#include <hsa.h>
#include <hsa_ext_amd.h>

#include <atomic>
#include <mutex>

#include "inc/rocprofiler.h"
#include "util/exception.h"
#include "util/hsa_rsrc_factory.h"

#define HSA_RT(call) \
  do { \
    const hsa_status_t status = call; \
    if (status != HSA_STATUS_SUCCESS) EXC_ABORT(status, #call); \
  } while(0)

#define IS_HSA_CALLBACK(ID) \
  const auto __id = ID; (void)__id; \
  void *__arg = arg_.load(); (void)__arg; \
  rocprofiler_hsa_callback_fun_t __callback = \
    (ID == ROCPROFILER_HSA_CB_ID_ALLOCATE) ? callbacks_.allocate: \
    (ID == ROCPROFILER_HSA_CB_ID_DEVICE) ? callbacks_.device: \
    (ID == ROCPROFILER_HSA_CB_ID_MEMCOPY) ? callbacks_.memcopy: \
                                            callbacks_.submit; \
  if (__callback != NULL)

#define DO_HSA_CALLBACK \
  do { __callback(__id, &data, __arg); } while (0)

#define ISSUE_HSA_CALLBACK(ID) \
  IS_HSA_CALLBACK(ID) { DO_HSA_CALLBACK; }

namespace rocprofiler {
extern decltype(hsa_memory_allocate)* hsa_memory_allocate_fn;
extern decltype(hsa_memory_assign_agent)* hsa_memory_assign_agent_fn;
extern decltype(hsa_memory_copy)* hsa_memory_copy_fn;
extern decltype(hsa_amd_memory_pool_allocate)* hsa_amd_memory_pool_allocate_fn;
extern decltype(hsa_amd_agents_allow_access)* hsa_amd_agents_allow_access_fn;
extern decltype(hsa_amd_memory_async_copy)* hsa_amd_memory_async_copy_fn;

class HsaInterceptor {
 public:
  typedef std::atomic<void*> arg_t;
  typedef std::mutex mutex_t;

  static void Enable(const bool& enable) { enable_ = enable; }

  static void HsaIntercept(HsaApiTable* table) {
    fprintf(stderr, "HsaInterceptor ...\n");
    if (enable_) {
      fprintf(stderr, "HsaInterceptor enabled\n");
      // saving original API functions
      hsa_memory_allocate_fn = table->core_->hsa_memory_allocate_fn;
      hsa_memory_assign_agent_fn = table->core_->hsa_memory_assign_agent_fn;
      hsa_memory_copy_fn = table->core_->hsa_memory_copy_fn;
      hsa_amd_memory_pool_allocate_fn = table->amd_ext_->hsa_amd_memory_pool_allocate_fn;
      hsa_amd_agents_allow_access_fn = table->amd_ext_->hsa_amd_agents_allow_access_fn;
      hsa_amd_memory_async_copy_fn = table->amd_ext_->hsa_amd_memory_async_copy_fn;
      // intercepting API
      table->core_->hsa_memory_allocate_fn = MemoryAllocate;
      table->core_->hsa_memory_assign_agent_fn = MemoryAssignAgent;
      table->core_->hsa_memory_copy_fn = MemoryCopy;
      table->amd_ext_->hsa_amd_memory_pool_allocate_fn = MemoryPoolAllocate;
      table->amd_ext_->hsa_amd_agents_allow_access_fn = AgentsAllowAccess;
      table->amd_ext_->hsa_amd_memory_async_copy_fn = MemoryAsyncCopy;
    }
    fprintf(stderr, "HsaInterceptor done\n");
  }

  static void SetCallbacks(rocprofiler_hsa_callbacks_t callbacks, void* arg) {
    std::lock_guard<mutex_t> lck(mutex_);
    callbacks_ = callbacks;
    arg_.store(arg);
  }

 private:
  static hsa_status_t HSA_API MemoryAllocate(hsa_region_t region,
    size_t size,
    void** ptr)
  {
    EXC_ABORT(HSA_STATUS_ERROR, "Deprecated API");
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_memory_allocate_fn(region, size, ptr));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_ALLOCATE) {
      rocprofiler_hsa_callback_data_t data{};
      data.allocate.addr = *ptr;
      data.allocate.size = size;

      HSA_RT(hsa_region_get_info(region, HSA_REGION_INFO_SEGMENT, &data.allocate.segment));
      HSA_RT(hsa_region_get_info(region, HSA_REGION_INFO_GLOBAL_FLAGS, &data.allocate.global_flag));

      DO_HSA_CALLBACK;
    }
    return status;
  }

  static hsa_status_t MemoryAssignAgent(
    void *ptr,
    hsa_agent_t agent,
    hsa_access_permission_t access)
  {
    EXC_ABORT(HSA_STATUS_ERROR, "Deprecated API");
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_memory_assign_agent_fn(ptr, agent, access));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_DEVICE) {
      rocprofiler_hsa_callback_data_t data{};
      data.device.mem = ptr;

      HSA_RT(hsa_agent_get_info(agent, HSA_AGENT_INFO_DEVICE, &data.device.type));

      DO_HSA_CALLBACK;
    }
    return status;
  }

  // Spawn device allow access callback
  static void DeviceCallback(
    uint32_t num_agents,
    const hsa_agent_t* agents,
    const void* ptr)
  {
    for (const hsa_agent_t* agent_p = agents; agent_p < (agents + num_agents); ++agent_p) {
      hsa_agent_t agent = *agent_p;
      rocprofiler_hsa_callback_data_t data{};
      data.device.id = util::HsaRsrcFactory::Instance().GetAgentInfo(agent)->dev_index;
      data.device.mem = ptr;

      HSA_RT(hsa_agent_get_info(agent, HSA_AGENT_INFO_DEVICE, &data.device.type));

      ISSUE_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_DEVICE);
    }
  }

  // Agent allow access callback 'hsa_amd_agents_allow_access'
  static hsa_status_t AgentsAllowAccess(
    uint32_t num_agents,
    const hsa_agent_t* agents,
    const uint32_t* flags,
    const void* ptr)
  {
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_amd_agents_allow_access_fn(num_agents, agents, flags, ptr));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_DEVICE) {
      DeviceCallback(num_agents, agents, ptr);
    }
    return status;
  }

  // Callback function to get available in the system agents
  struct agent_callback_data_t {
    hsa_amd_memory_pool_t pool;
    void* addr;
  };
  static hsa_status_t AgentCallback(hsa_agent_t agent, void* data) {
    agent_callback_data_t* callback_data = reinterpret_cast<agent_callback_data_t*>(data);
    hsa_amd_agent_memory_pool_info_t attribute = HSA_AMD_AGENT_MEMORY_POOL_INFO_ACCESS;
    hsa_amd_memory_pool_access_t value;
    HSA_RT(hsa_amd_agent_memory_pool_get_info(agent, callback_data->pool, attribute, &value));
    if (value == HSA_AMD_MEMORY_POOL_ACCESS_ALLOWED_BY_DEFAULT) {
      DeviceCallback(1, &agent, callback_data->addr);
    }
    return HSA_STATUS_SUCCESS;
  }

  static hsa_status_t MemoryPoolAllocate(
    hsa_amd_memory_pool_t pool,
    size_t size,
    uint32_t flags,
    void** ptr)
  {
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_amd_memory_pool_allocate_fn(pool, size, flags, ptr));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_ALLOCATE) {
      rocprofiler_hsa_callback_data_t data{};
      data.allocate.addr = *ptr;
      data.allocate.size = size;

      HSA_RT(hsa_amd_memory_pool_get_info(pool, HSA_AMD_MEMORY_POOL_INFO_SEGMENT, &data.allocate.segment));
      HSA_RT(hsa_amd_memory_pool_get_info(pool, HSA_AMD_MEMORY_POOL_INFO_GLOBAL_FLAGS, &data.allocate.global_flag));
#if 0
      HSA_RT(hsa_amd_memory_pool_get_info(pool, HSA_AMD_MEMORY_POOL_INFO_ACCESSIBLE_BY_ALL, &data.allocate.global_mem));
#endif

      DO_HSA_CALLBACK;

      IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_DEVICE) {
        // Scan the pool assigned devices
        agent_callback_data_t callback_data{pool, *ptr};
        hsa_iterate_agents(AgentCallback, &callback_data);
      }
    }
    return status;
  }

  static hsa_status_t MemoryCopy(
    void *dst,
    const void *src,
    size_t size)
  {
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_memory_copy_fn(dst, src, size));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_MEMCOPY) {
      rocprofiler_hsa_callback_data_t data{};
      data.memcopy.dst = dst;
      data.memcopy.src = src;
      data.memcopy.size = size;
      DO_HSA_CALLBACK;
    }
    return status;
  }

  static hsa_status_t MemoryAsyncCopy(
    void* dst, hsa_agent_t dst_agent, const void* src,
    hsa_agent_t src_agent, size_t size,
    uint32_t num_dep_signals,
    const hsa_signal_t* dep_signals,
    hsa_signal_t completion_signal)
  {
    hsa_status_t status = HSA_STATUS_SUCCESS;
    HSA_RT(hsa_amd_memory_async_copy_fn(
      dst, dst_agent, src, src_agent, size,
      num_dep_signals, dep_signals, completion_signal));
    IS_HSA_CALLBACK(ROCPROFILER_HSA_CB_ID_MEMCOPY) {
      rocprofiler_hsa_callback_data_t data{};
      data.memcopy.dst = dst;
      data.memcopy.src = src;
      data.memcopy.size = size;
      DO_HSA_CALLBACK;
    }
    return status;
  }

  static bool enable_;
  static rocprofiler_hsa_callbacks_t callbacks_;
  static arg_t arg_;
  static mutex_t mutex_;
};

}  // namespace rocprofiler

#endif  // _SRC_CORE_HSA_INTERCEPTOR_H