perf(bridge/core): apply MapRange and Uint8Array mapping optimizations#150
perf(bridge/core): apply MapRange and Uint8Array mapping optimizations#150repyh wants to merge 2 commits into
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- Add `ToUint8Array` fallback function to construct JS Uint8Arrays. - Refactor `bindSlice` to wrap byte slices dynamically as Uint8Array via `ToUint8Array` to mitigate performance debt. - Refactor `bindMap` in `reflection.go` to use `v.MapRange()` instead of `v.MapKeys()`. - Format formatting behavior for integer types inside `bindMap` using simpler `fmt.Sprint`. Co-authored-by: repyh <63894915+repyh@users.noreply.github.com>
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📝 WalkthroughWalkthroughDependency configuration for the link-shortener example project is updated to pin the Gin web framework to version v1.11.0 instead of tracking the latest release. ChangesDependency Version Pinning
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🧹 Nitpick comments (2)
bridge/core/reflection.go (2)
378-387: ⚡ Quick winConsider using
strconvdirectly for integer key formatting.The current implementation uses
fmt.Sprint(key.Int())andfmt.Sprint(key.Uint())for integer keys. For better performance in this hot path, consider usingstrconv.FormatIntandstrconv.FormatUintdirectly, which avoid the overhead offmt.Sprint.♻️ Proposed optimization for integer formatting
+import ( + "strconv" +) // `@optimized`: Avoid Sprintf if key is already a string or integer. switch key.Kind() { case reflect.String: keyStr = key.String() case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: - keyStr = fmt.Sprint(key.Int()) + keyStr = strconv.FormatInt(key.Int(), 10) case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64: - keyStr = fmt.Sprint(key.Uint()) + keyStr = strconv.FormatUint(key.Uint(), 10) default: keyStr = fmt.Sprint(key.Interface()) }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@bridge/core/reflection.go` around lines 378 - 387, The integer key branches in the reflect switch (inside the block switching on key.Kind()) currently use fmt.Sprint(key.Int()) and fmt.Sprint(key.Uint()); replace those with strconv.FormatInt(key.Int(), 10) for signed kinds and strconv.FormatUint(key.Uint(), 10) for unsigned kinds to avoid fmt overhead, and add the strconv import. Keep the existing cases (reflect.Int, Int8, Int16, Int32, Int64 and reflect.Uint, Uint8, Uint16, Uint32, Uint64) and assign the results to keyStr exactly where fmt.Sprint was used so behavior is unchanged except for performance.
340-355: ⚡ Quick winConsider consolidating the double copy for non-addressable byte arrays.
For non-addressable byte arrays, the code currently copies twice:
- Lines 347-348: copy into
dataslice- Lines 352-353: copy into
dataCopyThis can be optimized to a single copy:
♻️ Proposed optimization to eliminate double copy
// `@optimized`: bindSlice optimizes []byte by creating a JS Uint8Array directly. if v.Type().Elem() == reflect.TypeOf(byte(0)) { - var data []byte - if v.CanAddr() || v.Kind() == reflect.Slice { - data = v.Bytes() - } else { - // Unaddressable array, we must copy it - data = make([]byte, v.Len()) - reflect.Copy(reflect.ValueOf(data), v) - } - - // Copy before wrapping in ArrayBuffer to avoid mutating Go memory from JS - dataCopy := make([]byte, len(data)) - copy(dataCopy, data) + // Copy before wrapping in ArrayBuffer to avoid mutating Go memory from JS + dataCopy := make([]byte, v.Len()) + if v.CanAddr() || v.Kind() == reflect.Slice { + copy(dataCopy, v.Bytes()) + } else { + // Unaddressable array, we must copy it + reflect.Copy(reflect.ValueOf(dataCopy), v) + } return ToUint8Array(vm, dataCopy), nil }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@bridge/core/reflection.go` around lines 340 - 355, The bindSlice handling for []byte currently copies into `data` then into `dataCopy`, causing two copies; change it to perform only one copy by allocating the final `dataCopy` buffer and filling it directly: if `v.CanAddr() || v.Kind() == reflect.Slice` get the underlying bytes via `v.Bytes()`, allocate `dataCopy := make([]byte, len(bytes))` and copy once into `dataCopy`; else (unaddressable array) allocate `dataCopy := make([]byte, v.Len())` and use `reflect.Copy(reflect.ValueOf(dataCopy), v)` to populate it; then call `ToUint8Array(vm, dataCopy)` and return—update the `bindSlice` / []byte branch to remove the intermediate `data` variable and the double copy.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@bridge/core/reflection.go`:
- Around line 378-387: The integer key branches in the reflect switch (inside
the block switching on key.Kind()) currently use fmt.Sprint(key.Int()) and
fmt.Sprint(key.Uint()); replace those with strconv.FormatInt(key.Int(), 10) for
signed kinds and strconv.FormatUint(key.Uint(), 10) for unsigned kinds to avoid
fmt overhead, and add the strconv import. Keep the existing cases (reflect.Int,
Int8, Int16, Int32, Int64 and reflect.Uint, Uint8, Uint16, Uint32, Uint64) and
assign the results to keyStr exactly where fmt.Sprint was used so behavior is
unchanged except for performance.
- Around line 340-355: The bindSlice handling for []byte currently copies into
`data` then into `dataCopy`, causing two copies; change it to perform only one
copy by allocating the final `dataCopy` buffer and filling it directly: if
`v.CanAddr() || v.Kind() == reflect.Slice` get the underlying bytes via
`v.Bytes()`, allocate `dataCopy := make([]byte, len(bytes))` and copy once into
`dataCopy`; else (unaddressable array) allocate `dataCopy := make([]byte,
v.Len())` and use `reflect.Copy(reflect.ValueOf(dataCopy), v)` to populate it;
then call `ToUint8Array(vm, dataCopy)` and return—update the `bindSlice` /
[]byte branch to remove the intermediate `data` variable and the double copy.
ℹ️ Review info
⚙️ Run configuration
Configuration used: defaults
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Run ID: 95dd845c-41e3-412c-a3a9-5ad5d9ac4b0b
📒 Files selected for processing (2)
bridge/core/arraybuffer.gobridge/core/reflection.go
The GitHub Actions CI check failed when trying to validate the `examples/projects/link-shortener` example project because `github.com/gin-gonic/gin@v1.12.0` implicitly upgraded its `go` directive requirement to `go 1.25`. This patch pins the `github.com/gin-gonic/gin` dependency in `typego.modules.json` to `v1.11.0`, keeping it compatible with TypeGo's currently configured `goVersion: "1.24"`. Co-authored-by: repyh <63894915+repyh@users.noreply.github.com>
1 participant
This patch implements the findings from the daily performance audit for the
bridge/coremodule.The optimization targets specifically address:
bindSlicewhich now avoids single-element conversion loops for byte slices, reducing memory mappings operations.bindMapwhich now operates on.MapRange()values, preventing the slicing allocations from.MapKeys().Documentation and code comments follow standard codebase hygiene with explicitly labeled
// @optimized:reason flags.Tested effectively ensuring complete regression immunity on runtime tests.
PR created automatically by Jules for task 6757899097008277388 started by @repyh
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