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Solaris Dynamic Tracing Guide
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Document Information


1.  Introduction

2.  Types, Operators, and Expressions

3.  Variables

4.  D Program Structure

5.  Pointers and Arrays

6.  Strings

7.  Structs and Unions

8.  Type and Constant Definitions




Type Namespaces

9.  Aggregations

10.  Actions and Subroutines

11.  Buffers and Buffering

12.  Output Formatting

13.  Speculative Tracing

14.  dtrace(1M) Utility

15.  Scripting

16.  Options and Tunables

17.  dtrace Provider

18.  lockstat Provider

19.  profile Provider

20.  fbt Provider

21.  syscall Provider

22.  sdt Provider

23.  sysinfo Provider

24.  vminfo Provider

25.  proc Provider

26.  sched Provider

27.  io Provider

28.  mib Provider

29.  fpuinfo Provider

30.  pid Provider

31.  plockstat Provider

32.  fasttrap Provider

33.  User Process Tracing

34.  Statically Defined Tracing for User Applications

35.  Security

36.  Anonymous Tracing

37.  Postmortem Tracing

38.  Performance Considerations

39.  Stability

40.  Translators

41.  Versioning




The typedef keyword is used to declare an identifier as an alias for an existing type. Like all D type declarations, the typedef keyword is used outside probe clauses in a declaration of the form:

typedef existing-type new-type ;

where existing-type is any type declaration and new-type is an identifier to be used as the alias for this type. For example, the declaration:

typedef unsigned char uint8_t;

is used internally by the D compiler to create the uint8_t type alias. Type aliases can be used anywhere that a normal type can be used, such as the type of a variable or associative array value or tuple member. You can also combine typedef with more elaborate declarations such as the definition of a new struct:

typedef struct foo {
    int x;
    int y;
} foo_t;

In this example, struct foo is defined as the same type as its alias, foo_t. Solaris C system headers often use the suffix _t to denote a typedef alias.