2025-11-10 11:26:28 +00:00
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//go:build !(((linux || darwin || windows || freebsd || openbsd || netbsd || dragonfly || illumos) && (386 || arm || amd64 || arm64 || riscv64 || ppc64le || loong64)) || sqlite3_flock || sqlite3_dotlk)
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2024-04-10 13:15:36 +01:00
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package vfs
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2024-04-28 10:33:39 +01:00
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// SupportsSharedMemory is false on platforms that do not support shared memory.
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// To use [WAL without shared-memory], you need to set [EXCLUSIVE locking mode].
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2024-04-10 13:15:36 +01:00
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//
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// [WAL without shared-memory]: https://sqlite.org/wal.html#noshm
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// [EXCLUSIVE locking mode]: https://sqlite.org/pragma.html#pragma_locking_mode
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const SupportsSharedMemory = false
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2024-04-27 20:53:54 +01:00
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// NewSharedMemory returns a shared-memory WAL-index
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2024-04-28 10:33:39 +01:00
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// backed by a file with the given path.
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// It will return nil if shared-memory is not supported,
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2024-04-27 20:53:54 +01:00
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// or not appropriate for the given flags.
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2024-04-28 10:33:39 +01:00
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// Only [OPEN_MAIN_DB] databases may need a WAL-index.
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// You must ensure all concurrent accesses to a database
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// use shared-memory instances created with the same path.
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2024-04-27 20:53:54 +01:00
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func NewSharedMemory(path string, flags OpenFlag) SharedMemory {
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return nil
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}
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