Documentation
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Overview ¶
Package cmemprof profiles C memory allocations (malloc, calloc, realloc, etc.)
Importing this package in a program will replace malloc, calloc, and realloc with wrappers which will sample allocations and record them to a profile.
To use this package:
f, _ := os.Create("cmem.pprof")
var profiler cmemprof.Profile
profiler.Start(500)
// ... do allocations
profile, err := profiler.Stop()
Building this package on Linux requires a non-standard linker flag to wrap the alloaction functions. For Go versions < 1.15, cgo won't allow the flag so it has to be explicitly allowed by setting the following environment variable when building a program that uses this package:
export CGO_LDFLAGS_ALLOW="-Wl,--wrap=.*"
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Profile ¶
type Profile struct {
// SamplingRate is the value, in bytes, such that an average of one
// sample will be recorded for every SamplingRate bytes allocated. An
// allocation of N bytes will be recorded with probability min(1, N /
// SamplingRate).
SamplingRate int
// contains filtered or unexported fields
}
Profile provides access to a C memory allocation profiler based on instrumenting malloc, calloc, and realloc.
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