[SYCL] Make queue hash dependent on its unique ID (#12578)

Using implementation pointer as the hash can lead to situations where queues consistently get assigned the same hash as a queue that has been destroyed (due to being allocated at the same address). In some cases, this can cause consistent hash collisions if a library uses these hashes as a fast way to detect a different queue being passed to it.
intel · Feb 21, 2024 · 6b5cb12 · 6b5cb12
1 parent 3031733
commit 6b5cb12
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Showing 7 changed files with 69 additions and 43 deletions.
diff --git a/sycl/include/sycl/queue.hpp b/sycl/include/sycl/queue.hpp
@@ -2983,11 +2983,8 @@ class __SYCL_EXPORT queue : public detail::OwnerLessBase<queue> {
 } // namespace sycl
 
 namespace std {
-template <> struct hash<sycl::queue> {
-  size_t operator()(const sycl::queue &Q) const {
-    return std::hash<std::shared_ptr<sycl::detail::queue_impl>>()(
-        sycl::detail::getSyclObjImpl(Q));
-  }
+template <> struct __SYCL_EXPORT hash<sycl::queue> {
+  size_t operator()(const sycl::queue &Q) const;
 };
 } // namespace std
 

diff --git a/sycl/source/ld-version-script.txt b/sycl/source/ld-version-script.txt
@@ -27,6 +27,9 @@
     __sycl_register_lib;
     __sycl_unregister_lib;
 
+    /* Export std::hash specializations */
+    _ZNKSt4hashIN4sycl3_V15queueEEclERKS2_;
+
   local:
     *;
 };
diff --git a/sycl/source/queue.cpp b/sycl/source/queue.cpp
@@ -360,3 +360,10 @@ void queue::ext_oneapi_set_external_event(const event &external_event) {
 
 } // namespace _V1
 } // namespace sycl
+
+size_t std::hash<sycl::queue>::operator()(const sycl::queue &Q) const {
+  // Compared to using the impl pointer, the unique ID helps avoid hash
+  // collisions with previously destroyed queues.
+  return std::hash<unsigned long long>()(
+      sycl::detail::getSyclObjImpl(Q)->getQueueID());
+}
diff --git a/sycl/test/abi/sycl_symbols_linux.dump b/sycl/test/abi/sycl_symbols_linux.dump
@@ -4792,5 +4792,6 @@ _ZNK4sycl3_V19exception4codeEv
 _ZNK4sycl3_V19exception4whatEv
 _ZNK4sycl3_V19exception8categoryEv
 _ZNK4sycl3_V19kernel_id8get_nameEv
+_ZNKSt4hashIN4sycl3_V15queueEEclERKS2_
 __sycl_register_lib
 __sycl_unregister_lib
diff --git a/sycl/test/abi/sycl_symbols_windows.dump b/sycl/test/abi/sycl_symbols_windows.dump
@@ -705,6 +705,8 @@
 ??4?$OwnerLessBase@Vqueue@_V1@sycl@@@detail@_V1@sycl@@QEAAAEAV0123@AEBV0123@@Z
 ??4?$OwnerLessBase@Vstream@_V1@sycl@@@detail@_V1@sycl@@QEAAAEAV0123@$$QEAV0123@@Z
 ??4?$OwnerLessBase@Vstream@_V1@sycl@@@detail@_V1@sycl@@QEAAAEAV0123@AEBV0123@@Z
+??4?$hash@Vqueue@_V1@sycl@@@std@@QEAAAEAU01@$$QEAU01@@Z
+??4?$hash@Vqueue@_V1@sycl@@@std@@QEAAAEAU01@AEBU01@@Z
 ??4AccessorBaseHost@detail@_V1@sycl@@QEAAAEAV0123@$$QEAV0123@@Z
 ??4AccessorBaseHost@detail@_V1@sycl@@QEAAAEAV0123@AEBV0123@@Z
 ??4AccessorImplHost@detail@_V1@sycl@@QEAAAEAV0123@AEBV0123@@Z
@@ -810,6 +812,7 @@
 ??Fhalf@host_half_impl@detail@_V1@sycl@@QEAA?AV01234@H@Z
 ??Fhalf@host_half_impl@detail@_V1@sycl@@QEAAAEAV01234@XZ
 ??Ghalf@host_half_impl@detail@_V1@sycl@@QEAAAEAV01234@XZ
+??R?$hash@Vqueue@_V1@sycl@@@std@@QEBA_KAEBVqueue@_V1@sycl@@@Z
 ??Raccelerator_selector@_V1@sycl@@UEBAHAEBVdevice@12@@Z
 ??Rcpu_selector@_V1@sycl@@UEBAHAEBVdevice@12@@Z
 ??Rdefault_selector@_V1@sycl@@UEBAHAEBVdevice@12@@Z
@@ -1011,6 +1014,7 @@
 ?ext_codeplay_supports_fusion@queue@_V1@sycl@@QEBA_NXZ
 ?ext_intel_read_host_pipe@handler@_V1@sycl@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAX_K_N@Z
 ?ext_intel_write_host_pipe@handler@_V1@sycl@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAX_K_N@Z
+?ext_oneapi_advise_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEBX_KW4_pi_mem_advice@@V?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_architecture_is@device@_V1@sycl@@QEAA_NW4architecture@experimental@oneapi@ext@23@@Z
 ?ext_oneapi_barrier@handler@_V1@sycl@@QEAAXAEBV?$vector@Vevent@_V1@sycl@@V?$allocator@Vevent@_V1@sycl@@@std@@@std@@@Z
 ?ext_oneapi_barrier@handler@_V1@sycl@@QEAAXXZ
@@ -1043,8 +1047,6 @@
 ?ext_oneapi_copyD2H_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEAVSYCLMemObjI@234@PEAXIV?$range@$02@34@4V?$id@$02@34@IPEADI45IV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_copyH2D_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEAVSYCLMemObjI@234@PEADIV?$range@$02@34@V?$id@$02@34@IPEAXI445IV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_copy_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEBXPEAU_pi_ext_command_buffer@@_KPEAXV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
-?ext_oneapi_prefetch_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEAX_KV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
-?ext_oneapi_advise_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEBX_KW4_pi_mem_advice@@V?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_disable_peer_access@device@_V1@sycl@@QEAAXAEBV123@@Z
 ?ext_oneapi_empty@queue@_V1@sycl@@QEBA_NXZ
 ?ext_oneapi_enable_peer_access@device@_V1@sycl@@QEAAXAEBV123@@Z
@@ -1053,9 +1055,9 @@
 ?ext_oneapi_fill_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEAX_KHV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_get_composite_devices@platform@_V1@sycl@@QEBA?AV?$vector@Vdevice@_V1@sycl@@V?$allocator@Vdevice@_V1@sycl@@@std@@@std@@XZ
 ?ext_oneapi_get_default_context@platform@_V1@sycl@@QEBA?AVcontext@23@XZ
+?ext_oneapi_get_graph@queue@_V1@sycl@@QEBA?AV?$command_graph@$0A@@experimental@oneapi@ext@23@XZ
 ?ext_oneapi_get_kernel@kernel_bundle_plain@detail@_V1@sycl@@QEAA?AVkernel@34@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z
 ?ext_oneapi_get_last_event@queue@_V1@sycl@@QEBA?AVevent@23@XZ
-?ext_oneapi_get_graph@queue@_V1@sycl@@QEBA?AV?$command_graph@$0A@@experimental@oneapi@ext@23@XZ
 ?ext_oneapi_get_state@queue@_V1@sycl@@QEBA?AW4queue_state@experimental@oneapi@ext@23@XZ
 ?ext_oneapi_graph@handler@_V1@sycl@@QEAAXV?$command_graph@$00@experimental@oneapi@ext@23@@Z
 ?ext_oneapi_graph@queue@_V1@sycl@@QEAA?AVevent@23@V?$command_graph@$00@experimental@oneapi@ext@23@AEBUcode_location@detail@23@@Z
@@ -1080,6 +1082,7 @@
 ?ext_oneapi_owner_before@?$OwnerLessBase@Vqueue@_V1@sycl@@@detail@_V1@sycl@@QEBA_NAEBVqueue@34@@Z
 ?ext_oneapi_owner_before@?$OwnerLessBase@Vstream@_V1@sycl@@@detail@_V1@sycl@@QEBA_NAEBV?$weak_object_base@Vstream@_V1@sycl@@@2oneapi@ext@34@@Z
 ?ext_oneapi_owner_before@?$OwnerLessBase@Vstream@_V1@sycl@@@detail@_V1@sycl@@QEBA_NAEBVstream@34@@Z
+?ext_oneapi_prefetch_usm_cmd_buffer@MemoryManager@detail@_V1@sycl@@SAXV?$shared_ptr@Vcontext_impl@detail@_V1@sycl@@@std@@PEAU_pi_ext_command_buffer@@PEAX_KV?$vector@IV?$allocator@I@std@@@6@PEAI@Z
 ?ext_oneapi_set_external_event@queue@_V1@sycl@@QEAAXAEBVevent@23@@Z
 ?ext_oneapi_signal_external_semaphore@handler@_V1@sycl@@QEAAXUinterop_semaphore_handle@experimental@oneapi@ext@23@@Z
 ?ext_oneapi_signal_external_semaphore@queue@_V1@sycl@@QEAA?AVevent@23@Uinterop_semaphore_handle@experimental@oneapi@ext@23@AEBUcode_location@detail@23@@Z
@@ -1278,38 +1281,38 @@
 ?get_max_statement_size@stream@_V1@sycl@@QEBA_KXZ
 ?get_max_statement_size@stream_impl@detail@_V1@sycl@@QEBA_KXZ
 ?get_mip_level_mem_handle@experimental@oneapi@ext@_V1@sycl@@YA?AUimage_mem_handle@12345@U612345@IAEBVdevice@45@AEBVcontext@45@@Z
-?get_mip_level_mem_handle@experimental@oneapi@ext@_V1@sycl@@YA?AUimage_mem_handle@12345@U612345@IAEBVqueue@45@@Z
-?get_mip_level_mem_handle@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AUimage_mem_handle@23456@I@Z
-?get_name@kernel_id@_V1@sycl@@QEBAPEBDXZ
-?get_node_from_event@node@experimental@oneapi@ext@_V1@sycl@@SA?AV123456@Vevent@56@@Z
-?get_nodes@modifiable_command_graph@detail@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
-?get_num_channels@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBAIXZ
-?get_pipe_name@pipe_base@experimental@intel@ext@_V1@sycl@@KA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEBX@Z
-?get_pitch@image_impl@detail@_V1@sycl@@QEBA?AV?$range@$01@34@XZ
+?get_mip_level_mem_handle@experimental@oneapi@ext@_V1@sycl@@YA?AUimage_mem_handle@12345@U612345@IAEBVqueue@45@@Z
+?get_mip_level_mem_handle@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AUimage_mem_handle@23456@I@Z
+?get_name@kernel_id@_V1@sycl@@QEBAPEBDXZ
+?get_node_from_event@node@experimental@oneapi@ext@_V1@sycl@@SA?AV123456@Vevent@56@@Z
+?get_nodes@modifiable_command_graph@detail@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
+?get_num_channels@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBAIXZ
+?get_pipe_name@pipe_base@experimental@intel@ext@_V1@sycl@@KA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEBX@Z
+?get_pitch@image_impl@detail@_V1@sycl@@QEBA?AV?$range@$01@34@XZ
 ?get_pitch@image_plain@detail@_V1@sycl@@IEBA?AV?$range@$01@34@XZ
 ?get_platform@context@_V1@sycl@@QEBA?AVplatform@23@XZ
 ?get_platform@device@_V1@sycl@@QEBA?AVplatform@23@XZ
 ?get_platforms@platform@_V1@sycl@@SA?AV?$vector@Vplatform@_V1@sycl@@V?$allocator@Vplatform@_V1@sycl@@@std@@@std@@XZ
-?get_pointer_device@_V1@sycl@@YA?AVdevice@12@PEBXAEBVcontext@12@@Z
-?get_pointer_type@_V1@sycl@@YA?AW4alloc@usm@12@PEBXAEBVcontext@12@@Z
-?get_precision@stream@_V1@sycl@@QEBA_KXZ
-?get_predecessors@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
-?get_queue@fusion_wrapper@experimental@codeplay@ext@_V1@sycl@@QEBA?AVqueue@56@XZ
-?get_range@image_impl@detail@_V1@sycl@@QEBA?AV?$range@$02@34@XZ
-?get_range@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$range@$02@56@XZ
-?get_range@image_plain@detail@_V1@sycl@@IEBA?AV?$range@$02@34@XZ
-?get_root_nodes@modifiable_command_graph@detail@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
-?get_size@image_plain@detail@_V1@sycl@@IEBA_KXZ
-?get_size@stream@_V1@sycl@@QEBA_KXZ
-?get_size@stream_impl@detail@_V1@sycl@@QEBA_KXZ
-?get_specialization_constant_impl@kernel_bundle_plain@detail@_V1@sycl@@IEBAXPEBDPEAX@Z
-?get_stream_mode@stream@_V1@sycl@@QEBA?AW4stream_manipulator@23@XZ
-?get_successors@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
-?get_type@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AW4image_type@23456@XZ
-?get_type@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AW4node_type@23456@XZ
-?get_wait_list@event@_V1@sycl@@QEAA?AV?$vector@Vevent@_V1@sycl@@V?$allocator@Vevent@_V1@sycl@@@std@@@std@@XZ
-?get_width@stream@_V1@sycl@@QEBA_KXZ
-?get_work_item_buffer_size@stream@_V1@sycl@@QEBA_KXZ
+?get_pointer_device@_V1@sycl@@YA?AVdevice@12@PEBXAEBVcontext@12@@Z
+?get_pointer_type@_V1@sycl@@YA?AW4alloc@usm@12@PEBXAEBVcontext@12@@Z
+?get_precision@stream@_V1@sycl@@QEBA_KXZ
+?get_predecessors@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
+?get_queue@fusion_wrapper@experimental@codeplay@ext@_V1@sycl@@QEBA?AVqueue@56@XZ
+?get_range@image_impl@detail@_V1@sycl@@QEBA?AV?$range@$02@34@XZ
+?get_range@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$range@$02@56@XZ
+?get_range@image_plain@detail@_V1@sycl@@IEBA?AV?$range@$02@34@XZ
+?get_root_nodes@modifiable_command_graph@detail@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
+?get_size@image_plain@detail@_V1@sycl@@IEBA_KXZ
+?get_size@stream@_V1@sycl@@QEBA_KXZ
+?get_size@stream_impl@detail@_V1@sycl@@QEBA_KXZ
+?get_specialization_constant_impl@kernel_bundle_plain@detail@_V1@sycl@@IEBAXPEBDPEAX@Z
+?get_stream_mode@stream@_V1@sycl@@QEBA?AW4stream_manipulator@23@XZ
+?get_successors@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AV?$vector@Vnode@experimental@oneapi@ext@_V1@sycl@@V?$allocator@Vnode@experimental@oneapi@ext@_V1@sycl@@@std@@@std@@XZ
+?get_type@image_mem@experimental@oneapi@ext@_V1@sycl@@QEBA?AW4image_type@23456@XZ
+?get_type@node@experimental@oneapi@ext@_V1@sycl@@QEBA?AW4node_type@23456@XZ
+?get_wait_list@event@_V1@sycl@@QEAA?AV?$vector@Vevent@_V1@sycl@@V?$allocator@Vevent@_V1@sycl@@@std@@@std@@XZ
+?get_width@stream@_V1@sycl@@QEBA_KXZ
+?get_work_item_buffer_size@stream@_V1@sycl@@QEBA_KXZ
 ?get_work_item_buffer_size@stream_impl@detail@_V1@sycl@@QEBA_KXZ
 ?gpu_selector_v@_V1@sycl@@YAHAEBVdevice@12@@Z
 ?handleHostData@SYCLMemObjT@detail@_V1@sycl@@QEAAXAEBV?$function@$$A6AXPEAX@Z@std@@_K_N@Z
@@ -1493,13 +1496,13 @@
 ?setLocalAccessorArgHelper@handler@_V1@sycl@@AEAAXHAEAVLocalAccessorBaseHost@detail@23@@Z
 ?setPitches@image_impl@detail@_V1@sycl@@AEAAXAEBV?$range@$01@34@@Z
 ?setPitches@image_impl@detail@_V1@sycl@@AEAAXXZ
-?setStateExplicitKernelBundle@handler@_V1@sycl@@AEAAXXZ
-?setStateSpecConstSet@handler@_V1@sycl@@AEAAXXZ
-?setType@handler@_V1@sycl@@AEAAXW4CGTYPE@CG@detail@23@@Z
-?setUserFacingNodeType@handler@_V1@sycl@@AEAAXW4node_type@experimental@oneapi@ext@23@@Z
-?set_final_data@SYCLMemObjT@detail@_V1@sycl@@QEAAX$$T@Z
-?set_final_data@SYCLMemObjT@detail@_V1@sycl@@QEAAXAEBV?$function@$$A6AXAEBV?$function@$$A6AXPEAX@Z@std@@@Z@std@@@Z
-?set_final_data_from_storage@SYCLMemObjT@detail@_V1@sycl@@QEAAXXZ
+?setStateExplicitKernelBundle@handler@_V1@sycl@@AEAAXXZ
+?setStateSpecConstSet@handler@_V1@sycl@@AEAAXXZ
+?setType@handler@_V1@sycl@@AEAAXW4CGTYPE@CG@detail@23@@Z
+?setUserFacingNodeType@handler@_V1@sycl@@AEAAXW4node_type@experimental@oneapi@ext@23@@Z
+?set_final_data@SYCLMemObjT@detail@_V1@sycl@@QEAAX$$T@Z
+?set_final_data@SYCLMemObjT@detail@_V1@sycl@@QEAAXAEBV?$function@$$A6AXAEBV?$function@$$A6AXPEAX@Z@std@@@Z@std@@@Z
+?set_final_data_from_storage@SYCLMemObjT@detail@_V1@sycl@@QEAAXXZ
 ?set_final_data_internal@buffer_plain@detail@_V1@sycl@@IEAAXAEBV?$function@$$A6AXAEBV?$function@$$A6AXPEAX@Z@std@@@Z@std@@@Z
 ?set_final_data_internal@buffer_plain@detail@_V1@sycl@@IEAAXXZ
 ?set_final_data_internal@image_plain@detail@_V1@sycl@@IEAAXAEBV?$function@$$A6AXAEBV?$function@$$A6AXPEAX@Z@std@@@Z@std@@@Z

diff --git a/sycl/unittests/queue/CMakeLists.txt b/sycl/unittests/queue/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_sycl_unittest(QueueTests OBJECT
   DeviceCheck.cpp
   EventClear.cpp
+  Hash.cpp
   USM.cpp
   Wait.cpp
   GetProfilingInfo.cpp

diff --git a/sycl/unittests/queue/Hash.cpp b/sycl/unittests/queue/Hash.cpp
@@ -0,0 +1,14 @@
+#include <detail/queue_impl.hpp>
+#include <gtest/gtest.h>
+#include <helpers/PiMock.hpp>
+#include <sycl/queue.hpp>
+
+using namespace sycl;
+
+// Checks that the queue hash uses its unique ID.
+TEST(QueueHash, QueueHashUsesID) {
+  unittest::PiMock Mock;
+  queue Q;
+  unsigned long long ID = detail::getSyclObjImpl(Q)->getQueueID();
+  ASSERT_EQ(std::hash<unsigned long long>{}(ID), std::hash<queue>{}(Q));
+}