diff options
Diffstat (limited to 'ext/wasm/api/sqlite3-api-prologue.js')
| -rw-r--r-- | ext/wasm/api/sqlite3-api-prologue.js | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/ext/wasm/api/sqlite3-api-prologue.js b/ext/wasm/api/sqlite3-api-prologue.js index ef0885cb9..94514e477 100644 --- a/ext/wasm/api/sqlite3-api-prologue.js +++ b/ext/wasm/api/sqlite3-api-prologue.js @@ -79,13 +79,9 @@ the `realloc(3)`-compatible routine for the WASM environment. Defaults to `"sqlite3_realloc"`. - - `wasmfsOpfsDir`[^1]: if the environment supports persistent - storage using OPFS-over-WASMFS , this directory names the "mount - point" for that directory. It must be prefixed by `/` and may - contain only a single directory-name part. Using the root - directory name is not supported by any current persistent - backend. This setting is only used in WASMFS-enabled builds. - + - `wasmfsOpfsDir`[^1]: As of 2022-12-17, this feature does not + currently work due to incompatible Emscripten-side changes made + in the WASMFS+OPFS combination. This option is currently ignored. [^1] = This property may optionally be a function, in which case this function re-assigns it to the value returned from that function, @@ -138,6 +134,10 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap( config[k] = config[k](); } }); + config.wasmOpfsDir = + /* 2022-12-17: WASMFS+OPFS can no longer be activated from the + main thread (aborts via a failed assert() if it's attempted), + which eliminates any(?) benefit to supporting it. */ false; /** The main sqlite3 binding API gets installed into this object, @@ -1050,6 +1050,13 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap( /** State for sqlite3_wasmfs_opfs_dir(). */ let __wasmfsOpfsDir = undefined; /** + 2022-12-17: incompatible WASMFS changes have made WASMFS+OPFS + unavailable from the main thread, which eliminates the most + significant benefit of supporting WASMFS. This function is now a + no-op which always returns a falsy value. Before that change, + this function behaved as documented below (and how it will again + if we can find a compelling reason to support it). + If the wasm environment has a WASMFS/OPFS-backed persistent storage directory, its path is returned by this function. If it does not then it returns "" (noting that "" is a falsy value). @@ -1066,6 +1073,8 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap( if(undefined !== __wasmfsOpfsDir) return __wasmfsOpfsDir; // If we have no OPFS, there is no persistent dir const pdir = config.wasmfsOpfsDir; + console.error("sqlite3_wasmfs_opfs_dir() can no longer work due "+ + "to incompatible WASMFS changes. It will be removed."); if(!pdir || !self.FileSystemHandle || !self.FileSystemDirectoryHandle |