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Get a compact stacktrace without the callsites
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| var newLine = []byte("\n")[0] | |
| var goPathPrefix = "\t/go/src/" | |
| var goUsersPrefix = "\t/Users/" | |
| func dumpStacktrace(skipLines int) []byte { | |
| stack := debug.Stack() | |
| init, lines := 0, 0 | |
| // First pass: seek stack start skiping lines if necessary | |
| if skipLines > 0 { | |
| for i := 0; i < len(stack); i++ { | |
| if stack[i] == newLine { | |
| lines = lines + 1 | |
| if lines >= skipLines { | |
| init = i | |
| break | |
| } | |
| } | |
| } | |
| } | |
| lineBytes := 0 | |
| compact := false | |
| compactInit, compactStackSize := 0, 0 | |
| // Second pass: filter callsite lines while compacting the stack in the process | |
| if init < len(stack) { | |
| for i := init; i < len(stack); i++ { | |
| if stack[i] == newLine { | |
| lineBytes = 0 | |
| if compact { | |
| copied := copy(stack[compactStackSize:], stack[compactInit:i+1]) | |
| compactStackSize = compactStackSize + copied | |
| compact = false | |
| } | |
| } else { | |
| lineBytes = lineBytes + 1 | |
| } | |
| if lineBytes == 1 { | |
| if (string(stack[i:i+len(goPathPrefix)]) == goPathPrefix) || (string(stack[i:i+len(goUsersPrefix)]) == goUsersPrefix) { | |
| compact = true | |
| compactInit = i | |
| } | |
| } | |
| } | |
| } | |
| return stack[0:compactStackSize] | |
| } |
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