forked from KolibriOS/kolibrios
64 lines
1.6 KiB
HTML
64 lines
1.6 KiB
HTML
; =============================================================================
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; Модуль : HGCM Async
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; Назначение : Ожидание завершения async HGCM запросов
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; Файл : hgcm/async.inc
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; Версия : 1.0
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; Дата : 2025.01.15
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; =============================================================================
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; hgcm_wait_async
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proc hgcm_wait_async uses ebx ecx edx esi, request_ptr:dword
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mov esi, [request_ptr]
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test esi, esi
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jz .bad
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mov ecx, HGCM_TIMEOUT_ITERS
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] Waiting for async completion (timeout=%d iterations)\n", HGCM_TIMEOUT_ITERS
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.wait_loop:
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mfence
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mov eax, [esi + HGCM_HEADER.flags]
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test eax, VBOX_HGCM_REQ_DONE
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jnz .completed
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test eax, VBOX_HGCM_REQ_CANCELLED
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jnz .cancelled
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dec ecx
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jz .timeout
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; короткая задержка
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push ecx
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mov ecx, 1000
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.delay:
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pause
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loop .delay
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pop ecx
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jmp .wait_loop
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.completed:
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mfence
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] Async request completed\n"
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xor eax, eax
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ret
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.cancelled:
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] Async request cancelled\n"
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mov eax, VERR_GENERAL_FAILURE
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ret
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.timeout:
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] *** ASYNC TIMEOUT ***\n"
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] Current flags: 0x%x\n", [esi + HGCM_HEADER.flags]
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DEBUGF __DEBUG_HGCM__, "[VBoxGuest] [HGCM] Request RC: 0x%x\n", [esi + HGCM_HEADER.header.rc]
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mov eax, VERR_TIMEOUT
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ret
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.bad:
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mov eax, VERR_INVALID_POINTER
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ret
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endp
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