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SharedRegion内存共享到底是个什么机制呀?
我在主核上通过Memory_alloc分配了一段共享内存,然后在这段内存中写入数据,之后通过Notify模块就这个地址传递给了从核。 从核获得这个地址后,读取这个地址的内容发现同原来写入的数据不一样,这到底是个什么回事呀? 下面是我的代码: .cfg文件中的SharedRegion设置 var SharedRegion = xdc.useModule('ti.sdo.ipc.SharedRegion');/* Shared Memory base address and length */var SHAREDMEM_0 = 0x0c000000;var SHAREDMEMSIZE_0 = 0x00200000;SharedRegion.setEntryMeta(0, // 区域ID [ base: SHAREDMEM_0, // 基地址 len: SHAREDMEMSIZE_0, // 区域大小 ownerProcId: 0, // 所有者的核ID isValid: true, // 对于当前核,该区域是否有效 name: "DDR2_RAM_0", // 区域名称 ]);.c文件中的相关代码: if (coreId == 0) [ inBuf = (unsigned char*)Memory_alloc(SharedRegion_getHeap(0), dateNum, 128, NULL); if(inBuf==NULL) [ System_printf("malloc Buf failedn"); BIOS_exit(0); ] for(i=0;i [TMS320C66x_0] inBuf address 0xc02d780 [TMS320C66x_1] registerEvent status is 0 [TMS320C66x_0] outBuf date is 5 8 11 14 17 20 23 26 // 这里是输入数据 [TMS320C66x_0] SharedMem is finished [TMS320C66x_1] inBuf address 0xc02d780 [TMS320C66x_2] inBuf address 0xc02d780 [TMS320C66x_3] inBuf address 0xc02d780 [TMS320C66x_4] inBuf address 0xc02d780 [TMS320C66x_5] inBuf address 0xc02d780 [TMS320C66x_6] inBuf address 0xc02d780 [TMS320C66x_7] inBuf address 0xc02d780 [TMS320C66x_1] regionId is 0 [TMS320C66x_2] regionId is 0 [TMS320C66x_3] regionId is 0 [TMS320C66x_4] regionId is 0 [TMS320C66x_5] regionId is 0 [TMS320C66x_6] regionId is 0 [TMS320C66x_7] regionId is 0 [TMS320C66x_1] outBuf date is 255 255 255 255 128 40 29 0 // 输出数据 [TMS320C66x_2] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_3] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_4] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_5] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_6] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_7] outBuf date is 255 255 255 255 128 40 29 0 [TMS320C66x_1] SharedMem is finished [TMS320C66x_2] SharedMem is finished [TMS320C66x_3] SharedMem is finished [TMS320C66x_4] SharedMem is finished [TMS320C66x_5] SharedMem is finished [TMS320C66x_6] SharedMem is finished [TMS320C66x_7] SharedMem is finished |
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