嵌入式操作系统内核原理和开发（信号量）-2

static RAW_U16 internal_semaphore_put(RAW_SEMAPHORE *semaphore_ptr, RAW_U8 opt_wake_all)
N-pj!T3x$n0{
je,V2gTR0@A0 LIST *block_list_head;51Testing软件测试网8X:KiwM&Nz&pd
 51Testing软件测试网i|0g$bHN
 RAW_SR_ALLOC();51Testing软件测试网3SszD:w?TD(g}

Waj&fhXj8J3W0 #if (RAW_SEMA_FUNCTION_CHECK > 0)
D2OKy,J!h0 51Testing软件测试网*vV,bW^8}
 if (semaphore_ptr == 0) {51Testing软件测试网Qs%}CM3?9MxC
  51Testing软件测试网!j/un$wL[8i
  return RAW_NULL_OBJECT;51Testing软件测试网P-J |H7THM
 }
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}6]F,kz&b M0 #endif51Testing软件测试网)C+z%I2VnbG%V

 block_list_head = &semaphore_ptr->common_block_obj.block_list;
\xl(b+P0 51Testing软件测试网8I6z,y's,@r$r {u
 RAW_CRITICAL_ENTER();51Testing软件测试网Z3}
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 /*if no block task on this list just return*/51Testing软件测试网q!FE.o,jC R'Ij
 if (is_list_empty(block_list_head)) {       51Testing软件测试网L M
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    51Testing软件测试网mscaE$w
  if (semaphore_ptr->count == 0xffffffff) {51Testing软件测试网5f9O&|7Z*Vz

*XT*G*`.~;Z*B/H:^aZ0   RAW_CRITICAL_EXIT();
vI'OhN;M0   return RAW_SEMOPHORE_OVERFLOW;

+ig P3Ek!@;`0  }51Testing软件测试网B'pJAY]o
  /*increase resource*/51Testing软件测试网9K,Z3?)[}
     semaphore_ptr->count++;                                     
D%c5__;NT5y/QF"]0j0    51Testing软件测试网@4RQb^%m`
     RAW_CRITICAL_EXIT();
o#]vVxCN_a0     return RAW_SUCCESS;51Testing软件测试网 B5\/Jda eWG
 }

d-xD2wrM*nyZ{0 /*wake all the task blocked on this semphore*/51Testing软件测试网-J2X;cdI
 if (opt_wake_all) {

  while (!is_list_empty(block_list_head)) {51Testing软件测试网Klqm&O^R
   raw_wake_object(list_entry(block_list_head->next, RAW_TASK_OBJ, task_list));
})V"yA1Hfc0  }

dM[:Pajx0 }

8NA$Yo`9L0 else {
:R(Vv7E/mNkZy0  51Testing软件测试网k*@Qki&^7f/nq6_
  /*Wake up the highest priority task block on the semaphore*/51Testing软件测试网(J-F)S4UJ@9v
  raw_wake_object(list_entry(block_list_head->next, RAW_TASK_OBJ, task_list));
)J/V!iLA)G\0 }51Testing软件测试网#IU8Mdz&b,qa%N2hh
 51Testing软件测试网JWRa@a3@
 RAW_CRITICAL_EXIT();

@x-d%Pi6emH0 raw_sched();   51Testing软件测试网8H QL]*d h5`\A

4c+P%V9LQ~ @;}0 return RAW_SUCCESS;51Testing软件测试网z#Y0Y&Y TlfbN\Z
}

RAW_U16 raw_semaphore_delete(RAW_SEMAPHORE *semaphore_ptr)
-D Qn"} B2H&{){0{51Testing软件测试网2H2G#f(LtR+iT
 LIST *block_list_head;
4i(x)_"U8pj0 51Testing软件测试网 y~)V%U N I
 RAW_SR_ALLOC();51Testing软件测试网M+r$HWGt

 #if (RAW_SEMA_FUNCTION_CHECK > 0)
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;h!jRr7A0 if (semaphore_ptr == 0) {51Testing软件测试网aA&lOUg
  51Testing软件测试网os)RB[6`
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  return RAW_NULL_OBJECT;
&M[AU,F"e8|-r0 }
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6s7C_"X/Fhd0 #endif51Testing软件测试网u I5} ksa:r

@eS P)_+O,e+F9i0 block_list_head = &semaphore_ptr->common_block_obj.block_list;51Testing软件测试网0a+}'T#nH+`A
 
7I}7]-Q/z9wR0 RAW_CRITICAL_ENTER();51Testing软件测试网V1q-a`"bZT

x:c8W4e;V ?1B"@0 /*All task blocked on this queue is waken up*/51Testing软件测试网+l6k#?cjI:v
 while (!is_list_empty(block_list_head)) {51Testing软件测试网#m9M}+E%leUm\8W
  delete_pend_obj(list_entry(block_list_head->next, RAW_TASK_OBJ, task_list)); 
p6z&jW/?"J(C&B0 }                            51Testing软件测试网 C,Ls;? ^N8~7^

ko;{ UO'~6Wz O0 RAW_CRITICAL_EXIT();51Testing软件测试网A"}FK^+g
 raw_sched();51Testing软件测试网QZWh;U)d1b%{~
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 return RAW_SUCCESS;51Testing软件测试网M6D${V9? k_Pm
}