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heapdump14's Issues

2015/09/16 23:02:31 unknown record kind 26311

Hi,

I'm using go 1.5.1 and a fork that puts 1.5 in the expected header at https://github.com/cep21/heapdump14 (https://github.com/cep21/heapdump14/commit/1d13a6e5b26f5e2678caa105f22c40041eade8bd)
My program is a simple hello-world like app at https://github.com/cep21/heaptest/blob/master/main.go. I run it, then curl out a heap dump via

  curl localhost:6060/debug/pprof/heapdump > /tmp/heapdump

which is an endpoint I wrote that calls WriteHeapDump().

When I run ./hview /tmp/heapdump ../../heaptest/heaptest I get the following output:

Loading...
2015/09/16 23:07:09 unknown record kind 26311

Trouble with heap dump 1.7

Hi, I am trying to display a 1.7 heap dump using this tool. After some workarounds and fixes, I am struggling to get the types correctly named from the dwarf format.

One thing I don't understand is that the dump contains itabs for packages, e.g. net/http.. These are always single pointer and have the interfaceptr set to true. What are those for? There's no match in dwarf symbols.

I am having further issues with the 1.7 format since the iface/eface info is not present anymore, working on that.

panic at parser.go:1222 

Loading...
inferring types...
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x28 pc=0x4db8ee]

goroutine 1 [running]:
github.com/randall77/heapdump14/read.dwarfTypeMap(0xc208060000, 0xc208032c00, 0xc208032c00)
    /home/vmihailenco/workspace/gocode/src/github.com/randall77/heapdump14/read/parser.go:1222 +0xc6e
github.com/randall77/heapdump14/read.typePropagate(0xc208060000, 0x7fffa7d7a11e, 0x1d)
    /home/vmihailenco/workspace/gocode/src/github.com/randall77/heapdump14/read/parser.go:1477 +0x15f
github.com/randall77/heapdump14/read.Read(0x7fffa7d7a0f7, 0x26, 0x7fffa7d7a11e, 0x1d, 0x0)
    /home/vmihailenco/workspace/gocode/src/github.com/randall77/heapdump14/read/parser.go:2097 +0x6d
main.main()
    /home/vmihailenco/workspace/gocode/src/github.com/randall77/heapdump14/hview/main.go:893 +0x1f2
exit status 2

It looks like app panics because you don't handle dwarf.TagCompileUnit when building map[dwarf.Offset]dwarfType. Is this info enough to fix the panic?

interface conversion panic when using with a heapdump generated by a 1.4 compiled application

A panic occurs when using hview against a dump generated by Hugo compiled with 1.4.

The full output:

Loading...
inferring types...
2015/09/18 20:42:00 Type *template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   *html/template.Template
2015/09/18 20:42:00   *text/template.Template
2015/09/18 20:42:00 Type *map.hdr[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   *map.hdr[string]*html/template.Template
2015/09/18 20:42:00   *map.hdr[string]*text/template.Template
2015/09/18 20:42:00 Type template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   text/template.Template
2015/09/18 20:42:00   html/template.Template
2015/09/18 20:42:00 Type map.iter[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   map.iter[string]*text/template.Template
2015/09/18 20:42:00   map.iter[string]*html/template.Template
2015/09/18 20:42:00 Type map.bucket[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   map.bucket[string]*text/template.Template
2015/09/18 20:42:00   map.bucket[string]*html/template.Template
2015/09/18 20:42:00 Type []*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   []*text/template.Template
2015/09/18 20:42:00   []*html/template.Template
2015/09/18 20:42:00 Type [8]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   [8]*html/template.Template
2015/09/18 20:42:00   [8]*text/template.Template
2015/09/18 20:42:00 Type template.state is ambiguous.  Could be any of:
2015/09/18 20:42:00   text/template.state
2015/09/18 20:42:00   html/template.state
2015/09/18 20:42:00 Type []val<*template.Template> is ambiguous.  Could be any of:
2015/09/18 20:42:00   []val<*text/template.Template>
2015/09/18 20:42:00   []val<*html/template.Template>
2015/09/18 20:42:00 Type map.hdr[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   map.hdr[string]*html/template.Template
2015/09/18 20:42:00   map.hdr[string]*text/template.Template
2015/09/18 20:42:00 Type *map.bucket[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   *map.bucket[string]*text/template.Template
2015/09/18 20:42:00   *map.bucket[string]*html/template.Template
2015/09/18 20:42:00 Type template.FuncMap is ambiguous.  Could be any of:
2015/09/18 20:42:00   text/template.FuncMap
2015/09/18 20:42:00   html/template.FuncMap
2015/09/18 20:42:00 Type map[string]*template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   map[string]*html/template.Template
2015/09/18 20:42:00   map[string]*text/template.Template
2015/09/18 20:42:00 Type *template.state is ambiguous.  Could be any of:
2015/09/18 20:42:00   *text/template.state
2015/09/18 20:42:00   *html/template.state
2015/09/18 20:42:00 Type **template.Template is ambiguous.  Could be any of:
2015/09/18 20:42:00   **html/template.Template
2015/09/18 20:42:00   **text/template.Template
panic: interface conversion: read.dwarfType is *read.dwarfBaseType, not *read.dwarfPtrType

goroutine 1 [running]:
github.com/randall77/heapdump14/read.typePropagate(0xc20805e000, 0x7fff7c06f517, 0x18)
    /home/asd/code/go/src/github.com/randall77/heapdump14/read/parser.go:1546 +0x2598
github.com/randall77/heapdump14/read.Read(0x7fff7c06f4f6, 0x20, 0x7fff7c06f517, 0x18, 0x0)
    /home/asd/code/go/src/github.com/randall77/heapdump14/read/parser.go:2120 +0x6d
main.main()
    /home/asd/code/go/src/github.com/randall77/heapdump14/hview/main.go:893 +0x1f2

index out of range at parser.go in readPtr 

Loading...
panic: runtime error: index out of range

goroutine 1 [running]:
encoding/binary.littleEndian.Uint64(0x4c208457468, 0x0, 0x0, 0x4c20814fbc0)
        /usr/lib/google-golang/src/encoding/binary/binary.go:71 +0x11c
encoding/binary.(*littleEndian).Uint64(0x9a5ed8, 0x4c208457468, 0x0, 0x0, 0x4c20814fbc0)
        <autogenerated>:12 +0xb5
github.com/randall77/heapdump14/read.readPtr(0x4c20805e000, 0x4c208457468, 0x0, 0x0, 0x4eb650)
        /home/aababilov/go/src/github.com/randall77/heapdump14/read/parser.go:2116 +0xc0
github.com/randall77/heapdump14/read.(*Dump).appendEdge(0x4c20805e000, 0x0, 0x0, 0x0, 0x4c208457468, 0x8, 0x8, 0x8, 0x2, 0x0, ...)
        /home/aababilov/go/src/github.com/randall77/heapdump14/read/parser.go:1384 +0xb9
github.com/randall77/heapdump14/read.(*Dump).appendFields(0x4c20805e000, 0x0, 0x0, 0x0, 0x4c208457468, 0x8, 0x8, 0x4c20847c210, 0x1, 0x1, ...)
        /home/aababilov/go/src/github.com/randall77/heapdump14/read/parser.go:1439 +0x5fc
github.com/randall77/heapdump14/read.link2(0x4c20805e000)
        /home/aababilov/go/src/github.com/randall77/heapdump14/read/parser.go:1930 +0xf5
github.com/randall77/heapdump14/read.Read(0x7fffd5d46b86, 0x34, 0x0, 0x0, 0x0)
        /home/aababilov/go/src/github.com/randall77/heapdump14/read/parser.go:2103 +0xab
main.main()
        /home/aababilov/go/src/github.com/randall77/heapdump14/hview/main.go:893 +0x1f2

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