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-
- SETJMP(3) UNIX Programmer's Manual SETJMP(3)
-
- NNAAMMEE
- ssiiggsseettjjmmpp, ssiigglloonnggjjmmpp, sseettjjmmpp, lloonnggjjmmpp, __sseettjjmmpp, __lloonnggjjmmpp lloonnggjjmmppeerrrroorr -
- nonlocal jumps
-
- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<sseettjjmmpp..hh>>
-
- _i_n_t
- ssiiggsseettjjmmpp(_s_i_g_j_m_p___b_u_f _e_n_v, _i_n_t _s_a_v_e_m_a_s_k)
-
- _v_o_i_d
- ssiigglloonnggjjmmpp(_s_i_g_j_m_p___b_u_f _e_n_v, _i_n_t _v_a_l)
-
- _i_n_t
- sseettjjmmpp(_j_m_p___b_u_f _e_n_v)
-
- _v_o_i_d
- lloonnggjjmmpp(_j_m_p___b_u_f _e_n_v, _i_n_t _v_a_l)
-
- _i_n_t
- __sseettjjmmpp(_j_m_p___b_u_f _e_n_v)
-
- _v_o_i_d
- __lloonnggjjmmpp(_j_m_p___b_u_f _e_n_v, _i_n_t _v_a_l)
-
- _v_o_i_d
- lloonnggjjmmppeerrrroorr(_v_o_i_d)
-
- DDEESSCCRRIIPPTTIIOONN
- The ssiiggsseettjjmmpp(), sseettjjmmpp(), and __sseettjjmmpp() functions save their calling en
- vironment in _e_n_v. Each of these functions returns 0.
-
- The corresponding lloonnggjjmmpp() functions restore the environment saved by
- their most recent respective invocations of the sseettjjmmpp() function. They
- then return so that program execution continues as if the corresponding
- invocation of the sseettjjmmpp() call had just returned the value specified by
- _v_a_l, instead of 0.
-
- Pairs of calls may be intermixed, i.e. both ssiiggsseettjjmmpp() and ssiigglloonnggjjmmpp()
- and sseettjjmmpp() and lloonnggjjmmpp() combinations may be used in the same program,
- however, individual calls may not, i.e. the _e_n_v argument to ssiiggsseettjjmmpp()
- may not be passed to lloonnggjjmmpp().
-
- The lloonnggjjmmpp() routines may not be called after the routine which called
- the sseettjjmmpp() routines returns.
-
- All accessible objects have values as of the time lloonnggjjmmpp() routine was
- called, except that the values of objects of automatic storage invocation
- duration that do not have the _v_o_l_a_t_i_l_e type and have been changed between
- the sseettjjmmpp() invocation and lloonnggjjmmpp() call are indeterminate.
-
- The sseettjjmmpp()/lloonnggjjmmpp() pairs save and restore the signal mask while
- __sseettjjmmpp()/__lloonnggjjmmpp() pairs save and restore only the register set and the
- stack. (See ssiiggmmaasskk(_2).)
-
- The ssiiggsseettjjmmpp()/ssiigglloonnggjjmmpp() function pairs save and restore the signal
- mask if the argument _s_a_v_e_m_a_s_k is nonzero, otherwise only the register
- set and the stack are saved.
-
- EERRRROORRSS
- If the contents of the _e_n_v are corrupted, or correspond to an environment
- that has already returned, the lloonnggjjmmpp() routine calls the routine
- lloonnggjjmmppeerrrroorr(_3). If lloonnggjjmmppeerrrroorr() returns the program is aborted (see
- abort(2)). The default version of lloonnggjjmmppeerrrroorr() prints the message
- ``longjmp botch'' to standard error and returns. User programs wishing
- to exit more gracefully should write their own versions of
- lloonnggjjmmppeerrrroorr().
-
- SSEEEE AALLSSOO
- sigaction(2), sigstack(2), signal(3)
-
- SSTTAANNDDAARRDDSS
- The sseettjjmmpp() and lloonnggjjmmpp() functions conform to ANSI C3.1591989 (``ANSI
- C'').
-
- 4th Berkeley Distribution July 30, 1991 2
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