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@@ -1,6 +1,6 @@ |
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/* |
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* Carla shared memory utils |
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* Copyright (C) 2013 Filipe Coelho <falktx@falktx.com> |
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* Copyright (C) 2013-2014 Filipe Coelho <falktx@falktx.com> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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@@ -28,6 +28,12 @@ struct shm_t { HANDLE shm; HANDLE map; }; |
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typedef int shm_t; |
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#endif |
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#ifdef CARLA_OS_WIN |
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static shm_t gNullCarlaShm = { nullptr, nullptr }; |
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#else |
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static shm_t gNullCarlaShm = -1; |
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#endif |
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// ----------------------------------------------------------------------- |
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// shared memory calls |
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@@ -56,7 +62,7 @@ void carla_shm_init(shm_t& shm) |
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static inline |
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shm_t carla_shm_create(const char* const name) |
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{ |
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CARLA_ASSERT(name != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', gNullShm); |
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shm_t ret; |
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ret.shm = nullptr; // TODO |
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@@ -68,7 +74,7 @@ shm_t carla_shm_create(const char* const name) |
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static inline |
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shm_t carla_shm_attach(const char* const name) |
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{ |
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CARLA_ASSERT(name != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', gNullShm); |
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shm_t ret; |
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ret.shm = CreateFileA(name, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); |
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@@ -80,7 +86,7 @@ shm_t carla_shm_attach(const char* const name) |
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static inline |
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shm_t carla_shm_attach_linux(const char* const name) |
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{ |
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CARLA_ASSERT(name != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', gNullShm); |
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char shmName[std::strlen(name)+10]; |
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std::strcpy(shmName, "/dev/shm/"); |
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@@ -96,7 +102,7 @@ shm_t carla_shm_attach_linux(const char* const name) |
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static inline |
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shm_t carla_shm_create(const char* const name) |
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{ |
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CARLA_ASSERT(name != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', -1); |
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return shm_open(name, O_RDWR|O_CREAT|O_EXCL, 0600); |
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} |
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@@ -104,7 +110,7 @@ shm_t carla_shm_create(const char* const name) |
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static inline |
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shm_t carla_shm_attach(const char* const name) |
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{ |
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CARLA_ASSERT(name != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(name != nullptr && name[0] != '\0', -1); |
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return shm_open(name, O_RDWR, 0); |
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} |
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@@ -113,10 +119,10 @@ shm_t carla_shm_attach(const char* const name) |
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static inline |
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void carla_shm_close(shm_t& shm) |
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{ |
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CARLA_ASSERT(carla_is_shm_valid(shm)); |
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CARLA_SAFE_ASSERT_RETURN(carla_is_shm_valid(shm),); |
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#ifdef CARLA_OS_WIN |
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CARLA_ASSERT(shm.map == nullptr); |
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CARLA_SAFE_ASSERT_RETURN(shm.map == nullptr,); |
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CloseHandle(shm.shm); |
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shm.shm = nullptr; |
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@@ -129,11 +135,11 @@ void carla_shm_close(shm_t& shm) |
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static inline |
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void* carla_shm_map(shm_t& shm, const size_t size) |
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{ |
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CARLA_ASSERT(carla_is_shm_valid(shm)); |
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CARLA_ASSERT(size > 0); |
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CARLA_SAFE_ASSERT_RETURN(carla_is_shm_valid(shm), nullptr); |
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CARLA_SAFE_ASSERT_RETURN(size > 0, nullptr); |
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#ifdef CARLA_OS_WIN |
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CARLA_ASSERT(shm.map == nullptr); |
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CARLA_SAFE_ASSERT_RETURN(shm.map == nullptr, nullptr); |
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HANDLE map = CreateFileMapping(shm.shm, NULL, PAGE_READWRITE, size, size, NULL); |
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@@ -162,12 +168,12 @@ void* carla_shm_map(shm_t& shm, const size_t size) |
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static inline |
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void carla_shm_unmap(shm_t& shm, void* const ptr, const size_t size) |
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{ |
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CARLA_ASSERT(carla_is_shm_valid(shm)); |
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CARLA_ASSERT(ptr != nullptr); |
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CARLA_ASSERT(size > 0); |
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CARLA_SAFE_ASSERT_RETURN(carla_is_shm_valid(shm),); |
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CARLA_SAFE_ASSERT_RETURN(ptr != nullptr,); |
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CARLA_SAFE_ASSERT_RETURN(size > 0,); |
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#ifdef CARLA_OS_WIN |
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CARLA_ASSERT(shm.map != nullptr); |
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CARLA_SAFE_ASSERT_RETURN(shm.map != nullptr,); |
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UnmapViewOfFile(ptr); |
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CloseHandle(shm.map); |
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