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wasm: expose sqlite3_de/serialize(), sqlite3_malloc/free() and friends, noting that the former explicitly lies on use of the latter for memory management so is not generically safe for use in wasm.

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FossilOrigin-Name: fbc0edb5d31aa0dea92460e853f15f08c642451a7878994116b530cf172325cc
This commit is contained in:
stephan
2022-09-30 10:55:28 +00:00
parent f71c954cbc
commit 53d4e01d06
6 changed files with 196 additions and 150 deletions
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18
ext/wasm/api/sqlite3-api-prologue.js
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@ -368,7 +368,10 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
*/
util:{
isInt32, isTypedArray, isBindableTypedArray, isSQLableTypedArray,
affirmBindableTypedArray, typedArrayToString
affirmBindableTypedArray, typedArrayToString,
isMainWindow: ()=>{
return self.window===self && self.document;
}
},
/**
@ -603,6 +606,11 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
["sqlite3_db_filename", "string", "sqlite3*", "string"],
["sqlite3_db_handle", "sqlite3*", "sqlite3_stmt*"],
["sqlite3_db_name", "string", "sqlite3*", "int"],
["sqlite3_deserialize", "int", "sqlite3*", "string", "*", "i64", "i64", "int"]
/* Careful! Short version: de/serialize() are problematic because they
might use a different allocator that the user for managing the
deserialized block. de/serialize() are ONLY safe to use with
sqlite3_malloc(), sqlite3_free(), and its 64-bit variants. */,
["sqlite3_errmsg", "string", "sqlite3*"],
["sqlite3_error_offset", "int", "sqlite3*"],
["sqlite3_errstr", "string", "int"],
@ -615,6 +623,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
["sqlite3_extended_result_codes", "int", "sqlite3*", "int"],
["sqlite3_file_control", "int", "sqlite3*", "string", "int", "*"],
["sqlite3_finalize", "int", "sqlite3_stmt*"],
["sqlite3_free", undefined,"*"],
["sqlite3_initialize", undefined],
["sqlite3_interrupt", undefined, "sqlite3*"
/* ^^^ we cannot actually currently support this because JS is
@ -622,11 +631,13 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
from 2 SharedWorkers concurrently. */],
["sqlite3_libversion", "string"],
["sqlite3_libversion_number", "int"],
["sqlite3_malloc", "*","int"],
["sqlite3_open", "int", "string", "*"],
["sqlite3_open_v2", "int", "string", "*", "int", "string"],
/* sqlite3_prepare_v2() and sqlite3_prepare_v3() are handled
separately due to us requiring two different sets of semantics
for those, depending on how their SQL argument is provided. */
["sqlite3_realloc", "*","*","int"],
["sqlite3_reset", "int", "sqlite3_stmt*"],
["sqlite3_result_blob",undefined, "*", "*", "int", "*"],
["sqlite3_result_double",undefined, "*", "f64"],
@ -637,6 +648,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
["sqlite3_result_int",undefined, "*", "int"],
["sqlite3_result_null",undefined, "*"],
["sqlite3_result_text",undefined, "*", "string", "int", "*"],
["sqlite3_serialize","*", "sqlite3*", "string", "*", "int"],
["sqlite3_shutdown", undefined],
["sqlite3_sourceid", "string"],
["sqlite3_sql", "string", "sqlite3_stmt*"],
@ -672,6 +684,8 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
["sqlite3_bind_int64","int", ["sqlite3_stmt*", "int", "i64"]],
["sqlite3_changes64","i64", ["sqlite3*"]],
["sqlite3_column_int64","i64", ["sqlite3_stmt*", "int"]],
["sqlite3_malloc64", "*","i64"],
["sqlite3_realloc64", "*","*", "i64"],
["sqlite3_total_changes64", "i64", ["sqlite3*"]],
["sqlite3_uri_int64", "i64", ["string", "string", "i64"]]
];
@ -817,7 +831,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
return rc;
};
if( self.window===self ){
if( capi.util.isMainWindow() ){
/* Features specific to the main window thread... */
/**