package magic-trace

You can search for identifiers within the package.

in-package search v0.2.0

magic-trace.magic_trace
- Magic_trace
  - Min_duration
  - Private
magic-trace.magic_trace_core
- Magic_trace_core
  - Backend_intf
    
    S
    
    Decode_opts
    
    Record_opts
    
    Recording
  - Decode_result
  - Elf
    
    Addr_table
    
    Location
    
    Stop_info
    
    Symbol_resolver
  - Elf_intf
    
    Addr_table
    
    Location
    
    Stop_info
  - Errno
  - Event
    
    Decode_error
    
    Kind
    
    Location
    
    Ok
    
    Thread
  - Perf_map
  - Perf_map_location
  - Subcommand
  - Symbol
  - Timer_resolution
  - Trace_mode
  - Trace_state_change
  - When_to_snapshot
magic-trace.magic_trace_lib
- Magic_trace_lib
  - Boot_time
  - Breakpoint
    
    Hit
  - Env_vars
  - Import
  - Perf_capabilities
    
    Map
    
    Key
    
    Provide_bin_io
    
    Key
    
    Provide_hash
    
    Key
    
    Provide_of_sexp
    
    Key
    
    Replace_polymorphic_compare
    
    Set
    
    Elt
    
    Named
    
    Provide_bin_io
    
    Elt
    
    Provide_hash
    
    Elt
    
    Provide_of_sexp
    
    Elt
    
    Unstable
  - Perf_tool_backend
    
    Decode_opts
    
    Perf_line
    
    Record_opts
    
    Recording
  - Pow2_pages
  - Ptrace
  - Trace
    
    For_testing
  - Trace_writer
  - Trace_writer_intf
    
    S_trace
  - Tracing_tool_output

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Class type

type t

val breakpoint_fd : 
  Core.Pid.t ->
  addr:int64 ->
  single_hit:bool ->
  t Core.Or_error.t

Uses perf_event_open to set a hardware breakpoint at a given address in a process. When that breakpoint is hit the resulting file descriptor will poll as readable.

If single_hit is set the breakpoint will disable itself after being hit once.

val destroy : t -> unit

module Hit : sig ... end

val next_hit : t -> Hit.t option

val fd : t -> Core_unix.File_descr.t

Returns a waitable fd valid only until t is destroyed or GCd