some rearrangement of the shm server part, preparing for the windows port
Petr Mrázek
parent
91f64ac8ba
commit
242bf47143
@ -0,0 +1,47 @@
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# don't use this file directly. use the one in the root folder of the project
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SET(PROJECT_HDRS
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shms.h
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)
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SET(PROJECT_SRCS
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shms-proto.cpp
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)
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SET(PROJECT_HDRS_LINUX
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)
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SET(PROJECT_HDRS_WINDOWS
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)
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SET(PROJECT_SRCS_LINUX
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shms-linux.cpp
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)
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SET(PROJECT_SRCS_WINDOWS
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shms-windows.cpp
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)
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IF(UNIX)
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LIST(APPEND PROJECT_HDRS ${PROJECT_HDRS_LINUX})
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LIST(APPEND PROJECT_SRCS ${PROJECT_SRCS_LINUX})
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ELSE(UNIX)
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LIST(APPEND PROJECT_HDRS ${PROJECT_HDRS_WINDOWS})
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LIST(APPEND PROJECT_SRCS ${PROJECT_SRCS_WINDOWS})
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ENDIF(UNIX)
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SET_SOURCE_FILES_PROPERTIES( ${PROJECT_HDRS} PROPERTIES HEADER_FILE_ONLY TRUE )
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LIST(APPEND PROJECT_SRCS ${PROJECT_HDRS})
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IF(UNIX)
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add_definitions(-DLINUX_BUILD)
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SET(PROJECT_LIBS rt)
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ELSE(UNIX)
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# SET(PROJECT_LIBS psapi)
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ENDIF(UNIX)
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ADD_LIBRARY(dfconnect SHARED ${PROJECT_SRCS})
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TARGET_LINK_LIBRARIES(dfconnect ${PROJECT_LIBS})
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@ -0,0 +1,170 @@
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/*
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www.sourceforge.net/projects/dfhack
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Copyright (c) 2009 Petr Mrázek (peterix)
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product documentation
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would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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/**
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* This is the source for the DF <-> dfhack shm bridge, server protocol part
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "shms.h"
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// various crud
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extern int errorstate;
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extern char *shm;
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extern int shmid;
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void SHM_Act (void)
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{
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if(errorstate)
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{
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return;
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}
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uint32_t numwaits = 0;
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uint32_t length;
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uint32_t address;
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check_again: // goto target!!!
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if(numwaits == 10000)
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{
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// this tests if there's a process on the other side
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if(isValidSHM())
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{
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numwaits = 0;
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}
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else
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{
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_RUNNING;
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fprintf(stderr,"dfhack: Broke out of loop, other process disappeared.\n");
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}
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}
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switch (((shm_cmd *)shm)->pingpong)
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{
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case DFPP_RET_VERSION:
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case DFPP_RET_DATA:
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case DFPP_RET_DWORD:
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case DFPP_RET_WORD:
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case DFPP_RET_BYTE:
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case DFPP_SUSPENDED:
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case DFPP_RET_PID:
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case DFPP_SV_ERROR:
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numwaits++;
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goto check_again;
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case DFPP_SUSPEND:
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_SUSPENDED;
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goto check_again;
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/*
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case DFPP_BOUNCE:
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length = ((shm_bounce *)shm)->length;
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memcpy(BigFat,shm + SHM_HEADER,length);
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memcpy(shm + SHM_HEADER,BigFat,length);
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((shm_cmd *)shm)->pingpong = DFPP_RET_DATA;
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goto check_again;
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*/
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case DFPP_PID:
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#ifdef LINUX_BUILD
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((shm_retval *)shm)->value = getpid();
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#else
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((shm_retval *)shm)->value = GetCurrentProcessId(void);
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#endif
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_RET_PID;
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goto check_again;
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case DFPP_VERSION:
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((shm_retval *)shm)->value = PINGPONG_VERSION;
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_RET_VERSION;
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goto check_again;
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case DFPP_READ:
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length = ((shm_read *)shm)->length;
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address = ((shm_read *)shm)->address;
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memcpy(shm + SHM_HEADER, (void *) address,length);
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_RET_DATA;
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goto check_again;
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case DFPP_READ_DWORD:
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address = ((shm_read_small *)shm)->address;
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((shm_retval *)shm)->value = *((uint32_t*) address);
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_RET_DWORD;
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goto check_again;
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case DFPP_READ_WORD:
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address = ((shm_read_small *)shm)->address;
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((shm_retval *)shm)->value = *((uint16_t*) address);
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_RET_WORD;
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goto check_again;
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case DFPP_READ_BYTE:
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address = ((shm_read_small *)shm)->address;
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((shm_retval *)shm)->value = *((uint8_t*) address);
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_RET_BYTE;
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goto check_again;
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case DFPP_WRITE:
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address = ((shm_write *)shm)->address;
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length = ((shm_write *)shm)->length;
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memcpy((void *)address, shm + SHM_HEADER,length);
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_SUSPENDED;
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goto check_again;
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case DFPP_WRITE_DWORD:
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(*(uint32_t*)((shm_write_small *)shm)->address) = ((shm_write_small *)shm)->value;
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_SUSPENDED;
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goto check_again;
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case DFPP_WRITE_WORD:
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(*(uint16_t*)((shm_write_small *)shm)->address) = ((shm_write_small *)shm)->value;
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_SUSPENDED;
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goto check_again;
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case DFPP_WRITE_BYTE:
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(*(uint8_t*)((shm_write_small *)shm)->address) = ((shm_write_small *)shm)->value;
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full_barrier
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((shm_cmd *)shm)->pingpong = DFPP_SUSPENDED;
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goto check_again;
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case DFPP_CL_ERROR:
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case DFPP_RUNNING:
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fprintf(stderr, "no. of waits: %d\n", numwaits);
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break;
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default:
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((shm_retval *)shm)->value = DFEE_INVALID_COMMAND;
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full_barrier
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((shm_retval *)shm)->pingpong = DFPP_SV_ERROR;
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break;
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}
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}
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@ -0,0 +1,31 @@
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/*
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www.sourceforge.net/projects/dfhack
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Copyright (c) 2009 Petr Mrázek (peterix)
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product documentation
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||||||
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would be appreciated but is not required.
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||||||
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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/**
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* This is the source for the DF <-> dfhack shm bridge
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*/
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#include "shms.h"
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extern char *shm;
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// TO BE DONE
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