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More fleshing out of sqlite3.capi.wasm.pstack.

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FossilOrigin-Name: eb5726677a727a958df11f1fba078d30c7c0ba2a9bdb158e8641b35b5f971af3
This commit is contained in:
stephan
2022-10-02 03:11:13 +00:00
parent 6479c5a359
commit 63e9ec2f9c
8 changed files with 205 additions and 86 deletions
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41
ext/wasm/testing1.js
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@ -1030,31 +1030,60 @@
*/
const testPstack = function(db,sqlite3){
const w = sqlite3.capi.wasm, P = w.pstack;
const isAllocErr = (e)=>e instanceof sqlite3.WasmAllocError;
const stack = P.pointer;
T.assert(0===stack % 8 /* must be 8-byte aligned */);
try{
const quota = P.remaining;
log("pstack quota",quota);
T.assert(quota >= 4096)
.assert(0 === P.alloc(0))
.assert(0 === P.alloc(-1));
.mustThrowMatching(()=>P.alloc(0), isAllocErr)
.mustThrowMatching(()=>P.alloc(-1), isAllocErr);
let p1 = P.alloc(12);
T.assert(p1 === stack - 16/*8-byte aligned*/)
.assert(P.pointer === p1);
let p2 = P.alloc(7);
T.assert(p2 === p1-8/*8-byte aligned, stack grows downwards*/)
.assert(0 === P.alloc(quota))
.mustThrowMatching(()=>P.alloc(quota), isAllocErr)
.assert(24 === stack - p2)
.assert(P.pointer === p2);
let n = quota - (stack - p2);
let p3 = P.alloc(n);
T.assert(p3 === stack-quota)
.assert(0 === P.alloc(1));
.mustThrowMatching(()=>P.alloc(1), isAllocErr);
}finally{
P.restore(stack);
T.assert(P.pointer === stack);
}
}/*testPstack()*/;
T.assert(P.pointer === stack);
try {
const [p1, p2, p3] = P.allocChunks(3,4);
T.assert(P.pointer === stack-16/*always rounded to multiple of 8*/)
.assert(p2 === p1 + 4)
.assert(p3 === p2 + 4);
T.mustThrowMatching(()=>P.allocChunks(1024, 1024 * 16),
(e)=>e instanceof sqlite3.WasmAllocError)
}finally{
P.restore(stack);
}
T.assert(P.pointer === stack);
try {
let [p1, p2, p3] = P.allocPtr(3,false);
let sPos = stack-16/*always rounded to multiple of 8*/;
T.assert(P.pointer === sPos)
.assert(p2 === p1 + 4)
.assert(p3 === p2 + 4);
[p1, p2, p3] = P.allocPtr(3);
T.assert(P.pointer === sPos-24/*3 x 8 bytes*/)
.assert(p2 === p1 + 8)
.assert(p3 === p2 + 8);
p1 = P.allocPtr();
T.assert('number'===typeof p1);
}finally{
P.restore(stack);
}
}/*testPstack()*/;
const clearKvvfs = function(){
const sz = sqlite3.capi.sqlite3_web_kvvfs_size();